Windows 7 is a major release of the

Windows NT Windows NT is a Proprietary software, proprietary Graphical user interface, graphical operating system produced by Microsoft as part of its Windows product line, the first version of which, Windows NT 3.1, was released on July 27, 1993. Original ...

operating system An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ...

developed by

Microsoft Microsoft Corporation is an American multinational corporation and technology company, technology conglomerate headquartered in Redmond, Washington. Founded in 1975, the company became influential in the History of personal computers#The ear ...

. It was

released to manufacturing The software release life cycle is the process of developing, testing, and distributing a software product (e.g., an operating system). It typically consists of several stages, such as pre-alpha, alpha, beta, and release candidate, before the fi ...

on July 22, 2009, and became generally available on October 22, 2009. It is the successor to

Windows Vista Windows Vista is a major release of the Windows NT operating system developed by Microsoft. It was the direct successor to Windows XP, released five years earlier, which was then the longest time span between successive releases of Microsoft W ...

, released nearly three years earlier. Windows 7's server counterpart,

Windows Server 2008 R2 Windows Server 2008 R2, codenamed "Windows Server 7" or "Windows Server 2008 Release 2", is the eighth major version of the Windows NT operating system produced by Microsoft to be released under the Windows Server brand name. It was release ...

, was released at the same time. It sold over 630 million copies before it was succeeded by

Windows 8 Windows 8 is a major release of the Windows NT operating system developed by Microsoft. It was Software release life cycle#Release to manufacturing (RTM), released to manufacturing on August 1, 2012, made available for download via Microsoft ...

in October 2012. Extended support ended on January 14, 2020, over 10 years after the release of Windows 7, and the operating system ceased receiving further updates. A paid support program was available for enterprises, providing security updates for Windows 7 for up to three years since the official end of life. Windows 7 was intended to be an incremental upgrade to

, addressing the previous OS's poor reception while maintaining hardware and software compatibility as well as fixing some of Vista's inconsistencies (such as Vista's aggressive

User Account Control User Account Control (UAC) is a mandatory access control enforcement feature introduced with Microsoft's Windows Vista and Windows Server 2008 operating systems, with a more relaxed

). Windows 7 continued improvements on the

Windows Aero Windows Aero (a backronym for ''Authentic, Energetic, Reflective, and Open'') is the design language introduced in the Microsoft Windows Vista operating system in 2006. The changes introduced by Windows Aero encompassed many elements of the Windo ...

user interface with the addition of a redesigned

taskbar The taskbar is a graphical user interface element that has been part of Microsoft Windows since Windows 95, displaying and facilitating switching between running computer program, programs. The taskbar and the associated Start menu, Start Menu were ...

that allows pinned applications, and new window management features. Other new features were added to the operating system, including libraries, the new file-sharing system HomeGroup, and support for

multitouch In computing, multi-touch is technology that enables a surface (a touchpad or touchscreen) to recognize the presence of more than one point of contact with the surface at the same time. The origins of multitouch began at CERN, MIT, University o ...

input. A new " Action Center" was also added to provide an overview of system security and maintenance information, and tweaks were made to the

system to make it less intrusive. Windows 7 also shipped with updated versions of several stock applications, including Internet Explorer 8,

Windows Media Player Windows Media Player (WMP, officially referred to as Windows Media Player Legacy to retronym, distinguish it from Windows Media Player (2022), the new Windows Media Player introduced with Windows 11) is the first media player (application soft ...

, and

Windows Media Center Windows Media Center (WMC) is a discontinued digital video recorder and media player created by Microsoft. Media Center was first introduced to Windows in 2002 on Windows XP Media Center Edition (MCE). It was included in Home Premium and U ...

. Unlike Windows Vista, Windows 7 received warm reception among reviewers and consumers with critics considering the operating system to be a major improvement over its predecessor because of its improved performance, its more intuitive interface, fewer

popups, and other improvements made across the platform. Windows 7 was a major success for Microsoft; even before its official release, pre-order sales for the operating system on the online retailer

Amazon.com Amazon.com, Inc., doing business as Amazon, is an American multinational technology company engaged in e-commerce, cloud computing, online advertising, digital streaming, and artificial intelligence. Founded in 1994 by Jeff Bezos in Bellevu ...

had surpassed previous records. In just six months, over 100 million copies were sold worldwide until July 2012. By January 2018,

Windows 10 Windows 10 is a major release of Microsoft's Windows NT operating system. The successor to Windows 8.1, it was Software release cycle#Release to manufacturing (RTM), released to manufacturing on July 15, 2015, and later to retail on July 2 ...

surpassed Windows 7 as the most popular version of Windows worldwide.

Windows 11 Windows 11 is a version of Microsoft's Windows NT operating system, released on October 5, 2021, as the successor to Windows 10 (2015). It is available as a free upgrade for devices running Windows 10 that meet the #System requirements, Windo ...

overtook Windows 7 as the second most popular Windows version on all continents in August 2022. , just 2% of traditional PCs running Windows are running Windows 7. It is the final version of Microsoft Windows that supports processors without

SSE2 SSE2 (Streaming SIMD Extensions 2) is one of the Intel SIMD (Single Instruction, Multiple Data) processor supplementary instruction sets introduced by Intel with the initial version of the Pentium 4 in 2000. SSE2 instructions allow the use of ...

or NX (although an update released in 2018 dropped support for non-SSE2 processors).

Naming

Windows 7 is the successor to Windows Vista, and its version name is Windows NT 6.1, compared to Vista's NT 6.0; its naming caused some confusion when it was announced in 2008. Windows president

Steven Sinofsky Steven Jay Sinofsky (born 1965) is an American businessman, investor and software engineer. He served as president of the Windows Division at Microsoft from July 2009 until his resignation on November 13, 2012. In 1998 and in 2013, Sinofsky was ...

commented that

Windows 95 Windows 95 is a consumer-oriented operating system developed by Microsoft and the first of its Windows 9x family of operating systems, released to manufacturing on July 14, 1995, and generally to retail on August 24, 1995. Windows 95 merged ...

was the fourth version of Windows, but Windows 7 counts up from Windows NT 4.0 as it is a descendant of NT.

Development history

Originally, a version of Windows codenamed "Blackcomb" was planned as the successor to

Windows XP Windows XP is a major release of Microsoft's Windows NT operating system. It was released to manufacturing on August 24, 2001, and later to retail on October 25, 2001. It is a direct successor to Windows 2000 for high-end and business users a ...

and

Windows Server 2003 Windows Server 2003, codenamed "Whistler Server", is the sixth major version of the Windows NT operating system produced by Microsoft and the first server version to be released under the Windows Server brand name. It is part of the Windows NT ...

in 2000. Major features were planned for Blackcomb, including an emphasis on searching and querying data and an advanced storage system named WinFS to enable such scenarios. However, an interim, minor release, codenamed "Longhorn," was announced for 2003, delaying the development of Blackcomb. By the middle of 2003, however, Longhorn had acquired some of the features originally intended for Blackcomb. After three major malware outbreaks—the Blaster, Nachi, and Sobig worms—exploited flaws in Windows operating systems within a short time period in August 2003, Microsoft changed its development priorities, putting some of Longhorn's major development work on hold while developing new

service pack In computing, a service pack comprises a collection of updates, fixes, or enhancements to a software program delivered in the form of a single installable package. Companies often release a service pack when the number of individual patches to a ...

s for Windows XP and Windows Server 2003. Development of Longhorn (Windows Vista) was also restarted, and thus delayed, in August 2004. A number of features were cut from Longhorn. Blackcomb was renamed Vienna in early 2006, and was later canceled in 2007 due to the scope of the project. When released,

was criticized for its long development time, performance issues, spotty compatibility with existing hardware and software at launch, changes affecting the compatibility of certain PC games, and unclear assurances by Microsoft that certain computers shipping with XP before launch would be "Vista Capable" (which led to a class-action lawsuit), among other critiques. As such, the adoption of Vista in comparison to XP remained somewhat low. In July 2007, following the shelving of the Vienna project and six months following the public release of Vista, it was reported that the next version of Windows would then be codenamed Windows 7, with plans for a final release within three years.

Bill Gates William Henry Gates III (born October 28, 1955) is an American businessman and philanthropist. A pioneer of the microcomputer revolution of the 1970s and 1980s, he co-founded the software company Microsoft in 1975 with his childhood friend ...

, in an interview with ''

Newsweek ''Newsweek'' is an American weekly news magazine based in New York City. Founded as a weekly print magazine in 1933, it was widely distributed during the 20th century and has had many notable editors-in-chief. It is currently co-owned by Dev P ...

'', suggested that Windows 7 would be more "user-centric". Gates later said that Windows 7 would also focus on performance improvements.

later expanded on this point, explaining in the ''Engineering Windows 7'' blog that the company was using a variety of new tracing tools to measure the performance of many areas of the operating system on an ongoing basis, to help locate inefficient code paths and to help prevent performance regressions. Senior Vice President Bill Veghte stated that

users migrating to Windows 7 would not find the kind of device compatibility issues they encountered migrating from

. An estimated 1,000 developers worked on Windows 7. These were broadly divided into "core operating system" and "Windows client experience", in turn organized into 25 teams of around 40 developers on average. In October 2008, it was announced that Windows 7 would also be the official name of the operating system. There had been some confusion over naming the product Windows 7, while versioning it as 6.1 to indicate its similar build to Windows Vista and increase compatibility with applications that only check major version numbers, similar to

Windows 2000 Windows 2000 is a major release of the Windows NT operating system developed by Microsoft, targeting the server and business markets. It is the direct successor to Windows NT 4.0, and was Software release life cycle#Release to manufacturing (RT ...

and Windows XP both having 5.x version numbers. The first external release to select Microsoft partners came in January 2008 with Milestone 1, build 6519. Speaking about Windows 7 on October 16, 2008,

CEO

Steve Ballmer Steven Anthony Ballmer (; March 24, 1956) is an American businessman and investor who served as chief executive officer of Microsoft from 2000 to 2014. He is the owner of the Los Angeles Clippers of the National Basketball Association (NBA). He i ...

confirmed compatibility between

and Windows 7, indicating that Windows 7 would be a refined version of Windows Vista. At PDC 2008, Microsoft demonstrated Windows 7 with its reworked

. On December 27, 2008, the Windows 7 Beta was leaked onto the Internet via

BitTorrent BitTorrent is a Protocol (computing), communication protocol for peer-to-peer file sharing (P2P), which enables users to distribute data and electronic files over the Internet in a Decentralised system, decentralized manner. The protocol is d ...

. According to a performance test by ZDNet, Windows 7 Beta beat both

and Windows Vista in several key areas, including boot and shutdown time and working with files, such as loading documents. Other areas did not beat XP, including PC Pro benchmarks for typical office activities and video editing, which remain identical to Vista and slower than XP. On January 7, 2009, the x64 version of the Windows 7 Beta (build 7000) was leaked onto the web, with some torrents being infected with a

trojan Trojan or Trojans may refer to: * Of or from the ancient city of Troy * Trojan language, the language of the historical Trojans Arts and entertainment Music * '' Les Troyens'' ('The Trojans'), an opera by Berlioz, premiered part 1863, part 18 ...

. At CES 2009, Microsoft CEO

announced the Windows 7 Beta, build 7000, had been made available for download to MSDN and TechNet subscribers in the format of an ISO image. The stock wallpaper of the beta version contained a digital image of the Betta fish. The release candidate, build 7100, became available for MSDN and TechNet subscribers, and Connect Program participants on April 30, 2009. On May 5, 2009, it became available to the general public, although it had also been leaked onto the Internet via

. The release candidate was available in five languages and expired on June 1, 2010, with shutdowns every two hours starting March 1, 2010. Microsoft stated that Windows 7 would be released to the general public on October 22, 2009, less than three years after the launch of its predecessor. Microsoft released Windows 7 to MSDN and Technet subscribers on August 6, 2009. Microsoft announced that Windows 7, along with

, was released to manufacturing in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

and

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

on July 22, 2009. Windows 7 build 7600.16385.090713-1255, which was compiled on July 13, 2009, was declared the final RTM build after passing all Microsoft's tests internally.

Features

New and changed

Among Windows 7's new features are advances in touch and

handwriting recognition Handwriting recognition (HWR), also known as handwritten text recognition (HTR), is the ability of a computer to receive and interpret intelligible handwriting, handwritten input from sources such as paper documents, photographs, touch-screens ...

, support for virtual hard disks, improved performance on

multi-core A multi-core processor (MCP) is a microprocessor on a single integrated circuit (IC) with two or more separate central processing units (CPUs), called ''cores'' to emphasize their multiplicity (for example, ''dual-core'' or ''quad-core''). Ea ...

processors, improved

boot A boot is a type of footwear. Most boots mainly cover the foot and the ankle, while some also cover some part of the lower calf. Some boots extend up the leg, sometimes as far as the knee or even the hip. Most boots have a heel that is clearl ...

performance, DirectAccess, and kernel improvements. Windows 7 adds support for systems using multiple heterogeneous graphics cards from different vendors (Heterogeneous Multi-adapter), a new version of

, a

Gadget A gadget is a machine, mechanical device or any ingenious article. Gadgets are sometimes referred to as ''wikt:gizmo, gizmos''. History The etymology of the word is disputed. The word first appears as reference to an 18th-century tool in Glass ...

for Windows Media Center, improved media features, XPS Essentials Pack, and

Windows PowerShell PowerShell is a shell program developed by Microsoft for task automation and configuration management. As is typical for a shell, it provides a command-line interpreter for interactive use and a script interpreter for automation via a langua ...

being included, and a redesigned

Calculator An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics. The first solid-state electronic calculator was created in the early 1960s. Pocket-si ...

with multiline capabilities including ''Programmer'' and ''Statistics'' modes along with unit conversion for length, weight, temperature, and several others. Many new items have been added to the Control Panel, including

ClearType ClearType is Microsoft's implementation of subpixel rendering technology in rendering text in a font system. ClearType attempts to improve the appearance of text on certain types of computer display screens by sacrificing color fidelity for addit ...

Text Tuner, Display Color Calibration Wizard,

Gadgets A gadget is a mechanical device or any ingenious article. Gadgets are sometimes referred to as '' gizmos''. History The etymology of the word is disputed. The word first appears as reference to an 18th-century tool in glassmaking that was dev ...

, Recovery, Troubleshooting, Workspaces Center, Location and Other Sensors, Credential Manager, Biometric Devices, System Icons, and Display.

Windows Security Center Security and Maintenance (formerly known as Action Center, and Security Center in earlier versions) is a component of the Windows NT family of operating systems that monitors the security and maintenance status of the computer. Its monitoring ...

has been renamed to Action Center ( Windows Health Center and Windows Solution Center in earlier builds), which encompasses both

security Security is protection from, or resilience against, potential harm (or other unwanted coercion). Beneficiaries (technically referents) of security may be persons and social groups, objects and institutions, ecosystems, or any other entity or ...

and maintenance of the computer. ReadyBoost on 32-bit editions now supports up to 256 gigabytes of extra allocation. Windows 7 also supports images in

RAW image format A camera raw image file contains unprocessed or minimally processed data from the image sensor of either a digital camera, a motion picture film scanner, or other image scanner. Raw files are so named because they are not yet processed, ...

through the addition of

Windows Imaging Component Windows Imaging Component (WIC) is a COM-based imaging codec framework introduced in Windows Vista (and later available in Windows XP Service Pack 3) for working with and processing digital images and image metadata. WIC enables application ...

-enabled image decoders, which enables raw image thumbnails, previewing and metadata display in Windows Explorer, plus full-size viewing and slideshows in Windows Photo Viewer and Windows Media Center. Windows 7 also has a native TFTP client with the ability to transfer files to or from a TFTP server. The taskbar has seen the biggest visual changes, where the old Quick Launch toolbar has been replaced with the ability to pin applications to the taskbar. Buttons for pinned applications are integrated with the task buttons. These buttons also enable '' Jump Lists'' to allow easy access to common tasks, and files frequently used with specific applications. The revamped taskbar also allows the reordering of taskbar buttons. To the far right of the system clock is a small rectangular button that serves as the ''Show desktop'' icon. By default, hovering over this button makes all visible windows transparent for a quick look at the desktop. In touch-enabled displays such as touch screens, tablet PCs, etc., this button is slightly (8 pixels) wider in order to accommodate being pressed by a finger. Clicking this button minimizes all windows, and clicking it a second time restores them. Window management in Windows 7 has several new features: ''Aero Snap'' maximizes a window when it is dragged to the top, left, or right of the screen. Dragging windows to the left or right edges of the screen allows users to snap software windows to either side of the screen, such that the windows take up half the screen. When a user moves windows that were snapped or maximized using Snap, the system restores their previous state. Snap functions can also be triggered with keyboard shortcuts. ''Aero Shake'' hides all inactive windows when the active window's title bar is dragged back and forth rapidly. Windows 7 includes 13 additional sound schemes, titled Afternoon, Calligraphy, Characters, Cityscape, Delta, Festival, Garden, Heritage, Landscape, Quirky, Raga, Savanna, and Sonata. Internet Spades, Internet

Backgammon Backgammon is a two-player board game played with counters and dice on tables boards. It is the most widespread Western member of the large family of tables games, whose ancestors date back at least 1,600 years. The earliest record of backgammo ...

and Internet

Checkers Checkers (American English), also known as draughts (; English in the Commonwealth of Nations, Commonwealth English), is a group of Abstract strategy game, strategy board games for two players which involve forward movements of uniform game ...

, which were removed in Windows Vista, were restored in Windows 7. Users are able to disable or customize many more Windows components than was possible in Windows Vista. New additions to this list of components include Internet Explorer 8, Windows Media Player 12, Windows Media Center, Windows Search, and Windows Gadget Platform. A new version of Microsoft Virtual PC, newly renamed as

Windows Virtual PC Virtual PC is a discontinued x86 emulator software for Microsoft Windows hosts and PowerPC-based Mac hosts. It was created by Connectix in 1997 and acquired by Microsoft in 2003, after which the program was renamed Microsoft Virtual PC. In ...

was made available for Windows 7 Professional, Enterprise, and Ultimate editions. It allows multiple Windows environments, including ''Windows XP Mode'', to run on the same machine. Windows XP Mode runs

in a virtual machine, and displays applications within separate windows on the Windows 7 desktop. Furthermore, Windows 7 supports the mounting of a virtual hard disk (VHD) as a normal data storage, and the bootloader delivered with Windows 7 can boot the Windows system from a VHD; however, this ability is only available in the Enterprise and Ultimate editions. The

Remote Desktop Protocol Remote Desktop Protocol (RDP) is a proprietary protocol developed by Microsoft Corporation which provides a user with a graphical interface to connect to another computer over a network connection. The user employs RDP client software for this pu ...

(RDP) of Windows 7 is also enhanced to support real-time multimedia application including video playback and 3D games, thus allowing use of DirectX 10 in remote desktop environments. The three application limit, previously present in the Windows Vista and Windows XP Starter Editions, has been removed from Windows 7. All editions include some new and improved features, such as Windows Search,

Security Security is protection from, or resilience against, potential harm (or other unwanted coercion). Beneficiaries (technically referents) of security may be persons and social groups, objects and institutions, ecosystems, or any other entity or ...

features, and some

features new to Windows 7 Some of the new features included in Windows 7 are advancements in touch, speech recognition, speech and handwriting recognition, support for VHD (file format), virtual hard disks, support for additional file formats, improved performance on mult ...

, that originated within Vista. Optional BitLocker Drive Encryption is included with Windows 7 Ultimate and Enterprise. Windows Defender is included;

Microsoft Security Essentials Microsoft Security Essentials (MSE) is a discontinued antivirus software (AV) product that provides protection against different types of malicious software, such as computer viruses, spyware, rootkits, and Trojan horses. Prior to version 4.5, ...

antivirus software Antivirus software (abbreviated to AV software), also known as anti-malware, is a computer program used to prevent, detect, and remove malware. Antivirus software was originally developed to detect and remove computer viruses, hence the name ...

is a free download. All editions include Shadow Copy, which—every day or so—System Restore uses to take an automatic "previous version" snapshot of user files that have changed. Backup and restore have also been improved, and the

Windows Recovery Environment Windows Preinstallation Environment (also known as Windows PE and WinPE) is a lightweight version of Microsoft Windows, Windows used for the deployment of PCs, workstations, and servers, or troubleshooting an operating system while it is offlin ...

—installed by default—replaces the optional

Recovery Console The Recovery Console is a feature of the Windows 2000, Windows XP and Windows Server 2003 operating systems. It provides the means for administrators to perform a limited range of tasks using a command-line interface. Its primary function is to ...

of Windows XP. A new system known as "Libraries" was added for file management; users can aggregate files from multiple folders into a "Library." By default, libraries for categories such as Documents, Pictures, Music, and Video are created, consisting of the user's personal folder and the Public folder for each. The system is also used as part of a new home networking system known as HomeGroup; devices are added to the network with a

password A password, sometimes called a passcode, is secret data, typically a string of characters, usually used to confirm a user's identity. Traditionally, passwords were expected to be memorized, but the large number of password-protected services t ...

, and files and folders can be shared with all other devices in the HomeGroup, or with specific users. The default libraries, along with printers, are shared by default, but the personal folder is set to read-only access by other users, and the Public folder can be accessed by anyone. Windows 7 includes improved globalization support through a new Extended Linguistic Services API to provide

multilingual support Multilingualism is the use of more than one language, either by an individual speaker or by a group of speakers. When the languages are just two, it is usually called bilingualism. It is believed that multilingual speakers outnumber monoling ...

(particularly in Ultimate and Enterprise editions). Microsoft also implemented better support for

solid-state drive A solid-state drive (SSD) is a type of solid-state storage device that uses integrated circuits to store data persistently. It is sometimes called semiconductor storage device, solid-state device, or solid-state disk. SSDs rely on non- ...

s, including the new TRIM command, and Windows 7 is able to identify a solid-state drive uniquely. Native support for USB 3.0 is not included because of delays in the finalization of the standard. At WinHEC 2008 Microsoft announced that color depths of 30-bit and 48-bit would be supported in Windows 7 along with the wide color gamut scRGB (which for

HDMI High-Definition Multimedia Interface (HDMI) is a proprietary digital interface used to transmit high-quality video and audio signals between devices. It is commonly used to connect devices such as televisions, computer monitors, projectors, gam ...

1.3 can be converted and output as

xvYCC xvYCC or extended-gamut YCbCr is a color space that can be used in the video electronics of television sets to support a gamut 1.8 times as large as that of the sRGB color space. xvYCC was proposed by Sony, specified by the IEC in October 2005 ...

). The video modes supported in Windows 7 are 16-bit sRGB, 24-bit sRGB, 30-bit sRGB, 30-bit with extended color gamut sRGB, and 48-bit scRGB. For developers, Windows 7 includes a new networking

API An application programming interface (API) is a connection between computers or between computer programs. It is a type of software interface, offering a service to other pieces of software. A document or standard that describes how to build ...

with support for building SOAP-based web services in

native code In computer programming, machine code is computer program, computer code consisting of machine language instruction set architecture, instructions, which are used to control a computer's central processing unit (CPU). For conventional binary ...

(as opposed to

.NET The .NET platform (pronounced as "''dot net"'') is a free and open-source, managed code, managed computer software framework for Microsoft Windows, Windows, Linux, and macOS operating systems. The project is mainly developed by Microsoft emplo ...

-based WCF web services), new features to simplify development of installation packages and shorten application install times. Windows 7, by default, generates fewer

(UAC) prompts because it allows digitally signed Windows components to gain elevated privileges without a prompt. Additionally, users can now adjust the level at which UAC operates using a sliding scale.

Removed

Certain capabilities and programs that were a part of

are no longer present or have been changed, resulting in the removal of certain functionalities; these include the classic Start Menu user interface, some taskbar features, Windows Explorer features, Windows Media Player features, Windows Ultimate Extras, Search button, and InkBall. Four applications bundled with Windows Vista— Windows Photo Gallery,

Windows Movie Maker Windows Movie Maker (known as Windows Live Movie Maker for the 2009 and 2011 releases) is a discontinued video editing software program by Microsoft. It was first included in Windows Me on September 14, 2000, and in Windows XP on October 25, 200 ...

, Windows Calendar and Windows Mail—are not included with Windows 7 and were replaced by Windows Live-branded versions as part of the Windows Live Essentials suite.

Editions

Windows 7 is available in six different editions, of which the ''Home Premium'', ''Professional'', and ''Ultimate'' were available at retail in most countries, and as pre-loaded software on most new computers. ''Home Premium'' and ''Professional'' were aimed at home users and small businesses respectively, while ''Ultimate'' was aimed at enthusiasts. Each edition of Windows 7 includes all of the capabilities and features of the edition below it, and adds additional features oriented towards their market segments; for example, ''Professional'' adds additional networking and security features such as Encrypting File System and the ability to join a domain. ''Ultimate'' contained a superset of the features from ''Home Premium'' and ''Professional'', along with other advanced features oriented towards power users, such as

BitLocker BitLocker is a full volume encryption feature included with Microsoft Windows versions starting with Windows Vista. It is designed to protect data by providing encryption for entire volumes. By default, it uses the Advanced Encryption Standard ...

drive encryption; unlike Windows Vista, there were no " Ultimate Extras" add-ons created for Windows 7 Ultimate. Retail copies were available in "upgrade" and higher-cost "full" version

licenses A license (American English) or licence (Commonwealth English) is an official permission or permit to do, use, or own something (as well as the document of that permission or permit). A license is granted by a party (licensor) to another part ...

; "upgrade" licenses require an existing version of Windows to install, while "full" licenses can be installed on computers with no existing operating system. The remaining three editions were not available at retail, of which two were available exclusively through OEM channels as pre-loaded software. The ''Starter'' edition is a stripped-down version of Windows 7 meant for low-cost devices such as

netbook A netbook is a small-sized laptop computer; they were primarily sold from 2007 until around 2013, designed mostly as a means of accessing the Internet and being significantly less expensive than regular-sized laptops. At their inception in l ...

s. In comparison to Home Premium, Starter has reduced multimedia functionality, does not allow users to change their desktop wallpaper or theme, disables the "Aero Glass" theme, does not have support for multiple monitors, and can only address 2GB of RAM. ''Home Basic'' was sold only in

emerging markets An emerging market (or an emerging country or an emerging economy) is a market that has some characteristics of a developed market, but does not fully meet its standards. This includes markets that may become developed markets in the future or we ...

, and was positioned in between ''Home Premium'' and ''Starter''. The highest edition, ''Enterprise'', is functionally similar to ''Ultimate'', but is only sold through volume licensing via Microsoft's Software Assurance program. All editions aside from ''Starter'' support both

IA-32 IA-32 (short for "Intel Architecture, 32-bit", commonly called ''i386'') is the 32-bit version of the x86 instruction set architecture, designed by Intel and first implemented in the i386, 80386 microprocessor in 1985. IA-32 is the first incarn ...

and

x86-64 x86-64 (also known as x64, x86_64, AMD64, and Intel 64) is a 64-bit extension of the x86 instruction set architecture, instruction set. It was announced in 1999 and first available in the AMD Opteron family in 2003. It introduces two new ope ...

architectures, ''Starter'' only supports 32-bit systems. Retail copies of Windows 7 are distributed on two DVDs: one for the IA-32 version and the other for x86-64. OEM copies include one DVD, depending on the processor architecture licensed. The installation media for consumer versions of Windows 7 are identical, the

product key A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters ...

and corresponding license determines the edition that is installed. The Windows Anytime Upgrade service can be used to purchase an upgrade that unlocks the functionality of a higher edition, such as going from ''Starter'' to ''Home Premium'', and ''Home Premium'' to ''Ultimate''. Most copies of Windows 7 only contained one license; in certain markets, a "Family Pack" version of Windows 7 Home Premium was also released for a limited time, which allowed upgrades on up to three computers. In certain regions, copies of Windows 7 were only sold in, and could only be activated in a designated region.

Support lifecycle

Support for the original release of Windows 7 (without a service pack) ended on April 9, 2013, requiring users to update to Windows 7 Service Pack 1 in order to continue receiving updates and support. Microsoft ended the sale of new retail copies of Windows 7 in October 2014, and the sale of new OEM licenses for Windows 7 Home Basic, Home Premium, and Ultimate ended on October 31, 2014. OEM sales of PCs with Windows 7 ''Professional'' pre-installed ended on October 31, 2016. The sale of non-Professional OEM licenses was stopped on October 31, 2014. Mainstream support for Windows 7 ended on January 13, 2015, while extended support for Windows 7 ended on January 14, 2020. Variants of Windows 7 for embedded systems and

thin client In computer networking, a thin client, sometimes called slim client or lean client, is a simple (low-Computer performance, performance) computer that has been Program optimization, optimized for Remote desktop, establishing a remote connectio ...

s have different support policies: Windows Embedded Standard 7 support ended in October 2020, but Windows Thin PC and Windows Embedded POSReady 7 had support until October 2021. In March 2019, Microsoft announced that it would display notifications to users informing users of the upcoming end of support, and direct users to a website urging them to purchase a

upgrade or a new computer. In August 2019, researchers reported that "all modern versions of Microsoft Windows" may be at risk for "critical" system compromise because of design flaws of hardware

device driver In the context of an operating system, a device driver is a computer program that operates or controls a particular type of device that is attached to a computer or automaton. A driver provides a software interface to hardware devices, enabli ...

s from multiple providers. In the same month, computer experts reported that the BlueKeep

security vulnerability Vulnerabilities are flaws or weaknesses in a system's design, implementation, or management that can be exploited by a malicious actor to compromise its security. Despite a system administrator's best efforts to achieve complete correctness, vir ...

, , potentially affects older unpatched Microsoft Windows versions via the program's

, allowing for the possibility of remote code execution, may now include related flaws, collectively named '' DejaBlue'', affecting newer Windows versions (i.e., Windows 7 and all recent versions) as well. In addition, experts reported a

, , based on

legacy code Legacy or Legacies may refer to: Arts and entertainment Comics * " Batman: Legacy", a 1996 Batman storyline * '' DC Universe: Legacies'', a comic book series from DC Comics * ''Legacy'', a 1999 quarterly series from Antarctic Press * ''Legacy ...

involving Microsoft CTF and ctfmon (ctfmon.exe), that affects all

Windows Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...

versions from the older

version to the most recent Windows 10 versions; a patch to correct the flaw is currently available. In September 2019, Microsoft announced that it would provide free security updates for Windows 7 on federally-certified voting machines through the

2020 United States elections Elections in the United States, Elections were held in the United States on November 3, 2020. The Democratic Party (United States), Democratic Party's nominee, former Vice presidents of the United States, vice president Joe Biden, defeated incu ...

Extended Security Updates

On September 7, 2018, Microsoft announced a paid "Extended Security Updates" (ESU) service that will offer additional updates for Windows 7 ''Professional'' and ''Enterprise'' for up to three years after the end of extended support, available via specific volume licensing programs in yearly installments. Windows 7 Professional for Embedded Systems, Windows Embedded Standard 7, and Windows Embedded POSReady 7 also get Extended Security Updates for up to three years after their end of extended support date, via OEMs. The Extended Security Updates program for Windows Embedded POSReady 7 ended on October 8, 2024, marking the final end of

updates on the Windows NT 6.1 product line after more than 15 years. In August 2019, Microsoft announced it would offer a year of 'free' extended security updates to some business users.

Third-party support

In January 2023, version 109 of the

Chromium Chromium is a chemical element; it has Symbol (chemistry), symbol Cr and atomic number 24. It is the first element in Group 6 element, group 6. It is a steely-grey, Luster (mineralogy), lustrous, hard, and brittle transition metal. Chromium ...

-based

Microsoft Edge Microsoft Edge is a Proprietary Software, proprietary cross-platform software, cross-platform web browser created by Microsoft and based on the Chromium (web browser), Chromium open-source project, superseding Edge Legacy. In Windows 11, Edge ...

became the last version of Edge to support Windows 7, Windows Server 2008 R2, Windows 8/8.1, and Windows Server 2012/R2. Alongside this, several other web browsers based on the Chromium codebase also dropped support for these operating systems after version 109, including

Google Chrome Google Chrome is a web browser developed by Google. It was first released in 2008 for Microsoft Windows, built with free software components from Apple WebKit and Mozilla Firefox. Versions were later released for Linux, macOS, iOS, iPadOS, an ...

and

Opera Opera is a form of History of theatre#European theatre, Western theatre in which music is a fundamental component and dramatic roles are taken by Singing, singers. Such a "work" (the literal translation of the Italian word "opera") is typically ...

. A fork of Chromium named Supermium is maintained for versions of Windows older than Windows 10, including Windows 7.

Mozilla Mozilla is a free software community founded in 1998 by members of Netscape. The Mozilla community uses, develops, publishes and supports Mozilla products, thereby promoting free software and open standards. The community is supported institution ...

maintains

Firefox Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements curr ...

115 Extended Support Release (ESR) to support Windows 7, 8 and 8.1. Mozilla has committed to support it until at least August 2025.

Steam Steam is water vapor, often mixed with air or an aerosol of liquid water droplets. This may occur due to evaporation or due to boiling, where heat is applied until water reaches the enthalpy of vaporization. Saturated or superheated steam is inv ...

ended support for Windows 7, 8, and 8.1 on January 1, 2024.

System requirements

Additional requirements to use certain features: * Windows XP Mode (Professional, Ultimate and Enterprise): Requires an additional 1 GB of RAM and additional 15 GB of available hard disk space. As of March 18, 2010, the requirement for a processor capable of

hardware virtualization Hardware virtualization is the virtualization of computers as complete hardware platforms, certain logical abstractions of their componentry, or only the functionality required to run various operating systems. Virtualization emulates the hardw ...

has been lifted. *

(included in Home Premium, Professional, Ultimate and Enterprise), requires a

TV tuner A TV tuner card is a kind of television tuner that allows television signals to be received by a computer. Most TV tuners also function as video capture cards, allowing them to record television programs onto a hard disk much like the digital vi ...

to receive and record TV.

Physical memory

The maximum amount of RAM that Windows 7 supports varies depending on the product edition and on the processor architecture, as shown in the following table.

Processor limits

Windows 7 Professional and up support up to 2 physical processors (CPU sockets), whereas Windows 7 Starter, Home Basic, and Home Premium editions support only 1. Physical processors with either multiple cores, or hyper-threading, or both, implement more than one logical processor per physical processor. The x86 editions of Windows 7 support up to 32 logical processors; x64 editions support up to 256 (4 x 64).

Extent of hardware support

In January 2016, Microsoft announced that it would no longer support Windows platforms older than

on any future Intel-compatible processor lines, citing difficulties in reliably allowing the operating system to operate on newer hardware. Microsoft stated that effective July 17, 2017, devices with Intel Skylake CPUs were only to receive the "most critical" updates for Windows 7 and 8.1, and only if they have been judged not to affect the reliability of Windows 7 on older hardware. This would be until July 31, 2019, as August 2019 critical update requires at least Windows 10. For enterprise customers, Microsoft issued a list of Skylake-based devices "certified" for Windows 7 and 8.1 in addition to Windows 10, to assist them in migrating to newer hardware that can eventually be upgraded to 10 once they are ready to transition. Microsoft and their hardware partners provide special testing and support for these devices on 7 and 8.1 until the July 2017 date. On March 18, 2016, in response to criticism from enterprise customers, Microsoft delayed the end of support and non-critical updates for Skylake systems to July 17, 2018, but stated that they would also continue to receive security updates through the end of extended support. In August 2016, citing a "strong partnership with our OEM partners and Intel", Microsoft retracted the decision and stated that it would continue to support Windows 7 and 8.1 on Skylake hardware through the end of their extended support lifecycle. However, the restrictions on newer CPU microarchitectures remain in force. In March 2017, a Microsoft knowledge base article announced which implies that devices using Intel

Kaby Lake Kaby Lake is Intel's codename for its seventh generation Core microprocessor family announced on August 30, 2016. Like the preceding Skylake, Kaby Lake is produced using a 14 nanometer manufacturing process technology. Breaking with Intel's p ...

, AMD Bristol Ridge, or AMD

Ryzen Ryzen ( ) is a brand of multi-core x86-64 microprocessors, designed and marketed by AMD for desktop, mobile, server, and embedded platforms, based on the Zen microarchitecture. It consists of central processing units (CPUs) marketed for mai ...

, would be blocked from using Windows Update entirely. In addition, official Windows 7

device drivers In the context of an operating system, a device driver is a computer program that operates or controls a particular type of device that is attached to a computer or automaton. A driver provides a software interface to hardware devices, enabli ...

are not available for the Kaby Lake and Ryzen platforms. Security updates released since March 2018 contained bugs that affect processors that do not support

extensions, including all

Pentium III The Pentium III (marketed as Intel Pentium III Processor, informally PIII or P3) brand refers to Intel's 32-bit x86 desktop and mobile CPUs based on the sixth-generation P6 (microarchitecture), P6 microarchitecture introduced on February 28, 1999 ...

, Athlon XP, and prior processors. Microsoft initially stated that it would attempt to resolve this issue, and prevented installation of the affected patches on these systems. However, Microsoft retroactively modified its support documents on June 15, 2018 to remove the promise that this bug would be resolved, replacing it with a statement suggesting that users obtain a newer processor. This effectively ends further patch support for Windows 7 on these older systems.

Updates

Service Pack 1

Windows 7 Service Pack 1 (SP1) was announced on March 18, 2010. A beta was released on July 12, 2010. The final version was released to the public on February 22, 2011. At the time of release, it was not made mandatory. It was available via Windows Update, direct download, or by ordering the Windows 7 SP1 DVD. The service pack is on a much smaller scale than those released for previous versions of Windows, particularly Windows Vista. Windows 7 Service Pack 1 adds support for

Advanced Vector Extensions Advanced Vector Extensions (AVX, also known as Gesher New Instructions and then Sandy Bridge New Instructions) are SIMD extensions to the x86 instruction set architecture for microprocessors from Intel and Advanced Micro Devices (AMD). They w ...

(AVX), a 256-bit instruction set extension for processors, and improves

IKEv2 In computing, Internet Key Exchange (IKE, versioned as IKEv1 and IKEv2) is the protocol used to set up a security association (SA) in the IPsec protocol suite. IKE builds upon the Oakley protocol and ISAKMP.The Internet Key Exchange (IKE), RFC 2 ...

by adding additional identification fields such as E-mail ID to it. In addition, it adds support for Advanced Format 512e as well as additional Identity Federation Services. Windows 7 Service Pack 1 also resolves a bug related to

audio and another related to printing XPS documents. In Europe, the automatic nature of the BrowserChoice.eu feature was dropped in Windows 7 Service Pack 1 in February 2011 and remained absent for 14 months despite Microsoft reporting that it was still present, subsequently described by Microsoft as a "technical error." As a result, in March 2013, the European Commission fined Microsoft €561 million to deter companies from reneging on settlement promises.

Platform Update

The Platform Update for Windows 7 SP1 and Windows Server 2008 R2 SP1 was released on February 26, 2013 after a pre-release version had been released on November 5, 2012. It is also included with Internet Explorer 10 for Windows 7. It includes enhancements to

Direct2D Direct2D is a 2D vector graphics application programming interface (API) designed by Microsoft and implemented in Windows 10, Windows 8, Windows 7 and Windows Server 2008 R2, and also Windows Vista and Windows Server 2008 (with Platform Update ...

DirectWrite DirectWrite is a text layout and glyph rendering API by Microsoft. It was designed to replace GDI/GDI+ and Uniscribe for screen-oriented rendering and was first shipped with Windows 7 and Windows Server 2008 R2, as well as Windows Vista and Wi ...

Direct3D Direct3D is a graphics application programming interface (API) for Microsoft Windows. Part of DirectX, Direct3D is used to render three-dimensional graphics in applications where performance is important, such as games. Direct3D uses hardware ...

(WIC),

Windows Advanced Rasterization Platform Windows Advanced Rasterization Platform (WARP) is a software rasterizer and a component of DirectX graphics runtime in Windows 7 and later. It is available for Windows Vista and Windows Server 2008 through platform update for Windows Vista. WAR ...

(WARP), Windows Animation Manager (WAM), XPS Document API, H.264 Video Decoder and JPEG XR decoder. However support for Direct3D 11.1 is limited as the update does not include DXGI/ WDDM 1.2 from Windows 8, making unavailable many related APIs and significant features such as

stereoscopic Stereoscopy, also called stereoscopics or stereo imaging, is a technique for creating or enhancing the illusion of depth in an image by means of stereopsis for binocular vision. The word ''stereoscopy'' derives . Any stereoscopic image is ...

frame buffer, feature level 11_1 and optional features for levels 10_0, 10_1 and 11_0.

Disk Cleanup update

In October 2013, a Disk Cleanup Wizard addon was released that lets users delete outdated Windows updates on Windows 7 SP1, thus reducing the size of the WinSxS directory. This update backports some features found in Windows 8.

Windows Management Framework 5.0

Windows Management Framework 5.0 includes updates to Windows PowerShell 5.0, Windows PowerShell Desired State Configuration (DSC),

Windows Remote Management Windows Remote Management (WinRM) is the Microsoft implementation of the DMTF-standard WS-Management. It allows accessing or exchanging management information across a common network. Utilizing scripting objects or the built-in command-line tool, ...

(WinRM),

Windows Management Instrumentation Windows Management Instrumentation (WMI) is a set of extensions to the Windows Driver Model that provides an operating system interface through which instrumented components provide information and notification. WMI is Microsoft's implementatio ...

(WMI). It was released on February 24, 2016 and was eventually superseded by Windows Management Framework 5.1.

Convenience rollup

In May 2016, Microsoft released a "Convenience rollup update for Windows 7 SP1 and Windows Server 2008 R2 SP1," which contains all patches released between the release of SP1 and April 2016. The rollup is not available via Windows Update, and must be downloaded manually. This package can also be integrated into a Windows 7 installation image. Since October 2016, all security and reliability updates are cumulative. Downloading and installing updates that address individual problems is no longer possible, but the number of updates that must be downloaded to fully update the OS is significantly reduced.

Monthly update rollups (July 2016 – January 2020)

In June 2018, Microsoft announced that Windows 7 would be moved to a monthly update model beginning with updates released in September 2018, two years after Microsoft switched the rest of their supported operating systems to that model. With the new update model, instead of updates being released as they became available, only two update packages were released on the second Tuesday of every month until Windows 7 reached its end of life—one package containing security and quality updates, and a smaller package that contained only the security updates. Users could choose which package they wanted to install each month. Later in the month, another package would be released which was a preview of the next month's security and quality update rollup. Microsoft announced in July 2019 that the Microsoft Internet Games services on Windows XP and

Windows Me Windows Me (Millennium Edition) is an operating system developed by Microsoft as part of its Windows 9x family of Microsoft Windows operating systems. It was the successor to Windows 98, and was released to manufacturing on June 19, 2000, and t ...

would end on July 31, 2019 (and for Windows 7 on January 22, 2020). The last free security update rollup packages were released on January 14, 2020.

End of support (after January 14, 2020)

On January 14, 2020, Windows 7 support ended with Microsoft no longer providing security updates or fixes after that date, except for subscribers of the Windows 7 Extended Security Updates (ESU), who were able to receive Windows 7 security updates through January 10, 2023. However, there have been two updates that have been issued to non-ESU subscribers: * In February 2020, Microsoft released an update via

Windows Update Windows Update is a Microsoft service for the Windows 9x and Windows NT families of the Microsoft Windows operating system, which automates downloading and installing Microsoft Windows software updates over the Internet. The service delivers sof ...

to fix a black wallpaper issue caused by the January 2020 update for Windows 7. * In June 2020, Microsoft released an update via

to roll out the new

-based

to Windows 7 and 8.1 machines that are not connected to

Active Directory Active Directory (AD) is a directory service developed by Microsoft for Windows domain networks. Windows Server operating systems include it as a set of processes and services. Originally, only centralized domain management used Active Direct ...

. Users, e.g. those on Active Directory, can download Edge from Microsoft's website. In a support document, Microsoft has stated that a full-screen upgrade warning notification would be displayed on Windows 7 PCs on all editions except the Enterprise edition after January 15, 2020. The notification does not appear on machines connected to Active Directory, machines in kiosk mode, or machines subscribed for Extended Security Updates.

ESU rollups

As part of the September 2022 Extended Security Updates (ESU) rollup, Microsoft quietly added in Secure Boot support, along with partial

UEFI Unified Extensible Firmware Interface (UEFI, as an acronym) is a Specification (technical standard), specification for the firmware Software architecture, architecture of a computing platform. When a computer booting, is powered on, the UEFI ...

support.

Reception

Critical reception

Windows 7 received critical acclaim, with critics noting the increased usability and functionality when compared with its predecessor, Windows Vista. '' CNET'' gave Windows 7 Home Premium a rating of 4.5 out of 5 stars, stating that it "is more than what Vista should have been, ndit's where Microsoft needed to go". ''

PC Magazine ''PC Magazine'' (shortened as ''PCMag'') is an American computer magazine published by Ziff Davis. A print edition was published from 1982 to January 2009. Publication of online editions started in late 1994 and continues . Overview ''PC Mag ...

'' rated it a 4 out of 5 saying that Windows 7 is a "big improvement" over Windows Vista, with fewer compatibility problems, a retooled taskbar, simpler home networking and faster start-up. ''

Maximum PC ''Maximum PC'', formerly known as ''boot'', was an American magazine and website published by Future US. It focuses on cutting-edge PC hardware, with an emphasis on product reviews, step-by-step tutorials, and in-depth technical briefs. Compon ...

'' gave Windows 7 a rating of 9 out of 10 and called Windows 7 a "massive leap forward" in usability and security, and praised the new Taskbar as "worth the price of admission alone." ''

PC World ''PC World'' (stylized as PCWorld) is a global computer magazine published monthly by IDG. Since 2013, it has been an online-only publication. It offers advice on various aspects of PCs and related items, the Internet, and other personal tec ...

'' called Windows 7 a "worthy successor" to Windows XP and said that speed benchmarks showed Windows 7 to be slightly faster than Windows Vista. PC World also named Windows 7 one of the best products of the year. In its review of Windows 7,

Engadget Engadget ( ) is a technology news, reviews and analysis website offering daily coverage of gadgets, consumer electronics, video games, gaming hardware, apps, social media, streaming, AI, space, robotics, electric vehicles and other potentially ...

said that Microsoft had taken a "strong step forward" with Windows 7 and reported that speed is one of Windows 7's major selling points—particularly for the netbook sets. ''Laptop Magazine'' gave Windows 7 a rating of 4 out of 5 stars and said that Windows 7 makes computing more intuitive, offered better overall performance including a "modest to dramatic" increase in battery life on laptop computers. ''TechRadar'' gave Windows 7 a rating of 5 out of 5 stars, concluding that "it combines the security and architectural improvements of Windows Vista with better performance than XP can deliver on today's hardware. No version of Windows is ever perfect, but Windows 7 really is the best release of Windows yet." ''

USA Today ''USA Today'' (often stylized in all caps) is an American daily middle-market newspaper and news broadcasting company. Founded by Al Neuharth in 1980 and launched on September 14, 1982, the newspaper operates from Gannett's corporate headq ...

'' and ''

The Telegraph ''The Telegraph'', ''Daily Telegraph'', ''Sunday Telegraph'' and other variant names are often names for newspapers. Newspapers with these titles include: Australia * The Telegraph (Adelaide), ''The Telegraph'' (Adelaide), a newspaper in Adelaid ...

'' also gave Windows 7 favorable reviews. Nick Wingfield of ''

The Wall Street Journal ''The Wall Street Journal'' (''WSJ''), also referred to simply as the ''Journal,'' is an American newspaper based in New York City. The newspaper provides extensive coverage of news, especially business and finance. It operates on a subscriptio ...

'' wrote, "Visually arresting," and "A pleasure." Mary Branscombe of ''

Financial Times The ''Financial Times'' (''FT'') is a British daily newspaper printed in broadsheet and also published digitally that focuses on business and economic Current affairs (news format), current affairs. Based in London, the paper is owned by a Jap ...

'' wrote, "A clear leap forward." Jesus Diaz of ''

Gizmodo ''Gizmodo'' () is a design, technology, science, and science fiction website. It was originally launched as part of the Gawker Media network run by Nick Denton. ''Gizmodo'' also includes the sub-blogs ''io9'' and ''Earther'', which focus on pop ...

'' wrote, "Windows 7 Kills

Snow Leopard The snow leopard (''Panthera uncia'') is a species of large cat in the genus ''Panthera'' of the family Felidae. The species is native to the mountain ranges of Central and South Asia. It is listed as Vulnerable on the IUCN Red List because ...

." Don Reisinger of '' CNET'' wrote, "Delightful." David Pogue of ''

The New York Times ''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...

'' wrote, "Faster." J. Peter Bruzzese and Richi Jennings of ''

Computerworld ''Computerworld'' (abbreviated as CW) is a computer magazine published since 1967 aimed at information technology (IT) and Business computing, business technology professionals. Original a print magazine, ''Computerworld'' published its final pr ...

'' wrote, "Ready." Some

Windows Vista Ultimate Windows Vista—a major release of the Microsoft Windows operating system—was available in six different product editions: Starter, Home Basic, Home Premium, Business, Enterprise, and Ultimate. On September 5, 2006, Microsoft announced the USD ...

users have expressed concerns over Windows 7 pricing and upgrade options. Windows Vista Ultimate users wanting to upgrade from Windows Vista to Windows 7 had to either pay $219.99 to upgrade to Windows 7 Ultimate or perform a clean install, which requires them to reinstall all of their programs. The changes to User Account Control on Windows 7 were criticized for being potentially insecure, as an exploit was discovered allowing untrusted software to be launched with elevated privileges by exploiting a trusted component. Peter Bright of ''

Ars Technica ''Ars Technica'' is a website covering news and opinions in technology, science, politics, and society, created by Ken Fisher and Jon Stokes in 1998. It publishes news, reviews, and guides on issues such as computer hardware and software, sci ...

'' argued that "the way that the Windows 7 UAC 'improvements' have been made completely exempts Microsoft's developers from having to do that work themselves. With Windows 7, it's one rule for Redmond, another one for everyone else." Microsoft's Windows kernel engineer

Mark Russinovich Mark Eugene Russinovich (born December 22, 1966) is a Spanish-born American software engineer and author who serves as CTO of Microsoft Azure. He was a cofounder of software producers Winternals before Microsoft acquired it in 2006. Early lif ...

acknowledged the problem, but noted that malware can also compromise a system when users agree to a prompt.

Sales

In July 2009, in only eight hours, pre-orders of Windows 7 at amazon.co.uk surpassed the demand which Windows Vista had in its first 17 weeks. It became the highest-grossing pre-order in

Amazon Amazon most often refers to: * Amazon River, in South America * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon (company), an American multinational technology company * Amazons, a tribe of female warriors in Greek myth ...

's history, surpassing sales of the previous record holder, the seventh ''Harry Potter'' book. After 36 hours, 64-bit versions of Windows 7 Professional and Ultimate editions sold out in Japan. Two weeks after its release its market share had surpassed that of

, released two months previously as the most recent update to Apple's

Mac OS X macOS, previously OS X and originally Mac OS X, is a Unix, Unix-based operating system developed and marketed by Apple Inc., Apple since 2001. It is the current operating system for Apple's Mac (computer), Mac computers. With ...

operating system. According to Net Applications, Windows 7 reached a 4% market share in less than three weeks; in comparison, it took Windows Vista seven months to reach the same mark. As of February 2014, Windows 7 had a market share of 47.49% according to Net Applications; in comparison, Windows XP had a market share of 29.23%. On March 4, 2010, Microsoft announced that it had sold more than 90 million licenses. By April 23, 2010, more than 100 million copies were sold in six months, which made it Microsoft's fastest-selling operating system. As of June 23, 2010, Windows 7 has sold 150 million copies which made it the fastest selling operating system in history with seven copies sold every second. Based on worldwide data taken during June 2010 from Windows Update 46% of Windows 7 PCs run the 64-bit edition of Windows 7. According to Stephen Baker of the NPD Group during April 2010 in the United States 77% of PCs sold at retail were pre-installed with the 64-bit edition of Windows 7. As of July 22, 2010, Windows 7 had sold 175 million copies. On October 21, 2010, Microsoft announced that more than 240 million copies of Windows 7 had been sold. Three months later, on January 27, 2011, Microsoft announced total sales of 300 million copies of Windows 7. On July 12, 2011, the sales figure was refined to over 400 million end-user licenses and business installations. As of July 9, 2012, over 630 million licenses have been sold; this number includes licenses sold to OEMs for new PCs.

Antitrust concerns

As with other Microsoft operating systems, Windows 7 was studied by United States federal regulators who oversee the company's operations following the 2001 '' United States v. Microsoft Corp.'' settlement. According to status reports filed, the three-member panel began assessing prototypes of the new operating system in February 2008. Michael Gartenberg, an analyst at Jupiter Research, said, " icrosoft's!--The word "Microsoft's" appears in square brackets here because it was inserted into the quote to replace the unclear pronoun "Their" in this context. Please do not change this as it would make it look like the word "Microsoft" was in the original quote which is not the case.--> challenge for Windows 7 will be how can they continue to add features that consumers will want that also don't run afoul of regulators." In order to comply with European antitrust regulations, Microsoft proposed the use of a "ballot" screen containing download links to competing web browsers, thus removing the need for a version of Windows completely without Internet Explorer, as previously planned. Microsoft announced that it would discard the separate version for Europe and ship the standard upgrade and full packages worldwide, in response to criticism involving Windows 7 E and concerns from manufacturers about possible consumer confusion if a version of Windows 7 with Internet Explorer were shipped later, after one without Internet Explorer. As with the previous version of Windows, an N version, which does not come with

, has been released in Europe, but only for sale directly from Microsoft sales websites and selected others.

References

External links

Windows 7 Service Pack 1 (SP1)

Windows 7 SP1 update history
{{authority control 2009 software IA-32 operating systems 7 X86-64 operating systems Products and services discontinued in 2020 Microsoft Windows