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Windows 7
A version of the Windows NT operating system
XP (2004)
Windows 7
Screenshot of Windows 7, showing

its desktop, redesigned taskbar,

and the theme of Luna Aero

Developer Microsoft
Source model Closed source and shared source
Released to

manufacturing

July 22, 2009; 9 years ago
General

availability

October 22, 2009; 9 years ago
Latest release Service Pack 1 (6.1.7601) /

February 22, 2011; 7 years ago

Update method Windows Update
Platforms IA-32 and x86-64
Kernel type Hybrid
License Proprietary commercial software
Preceded by Windows Vista (2006)
Succeeded by Windows 8 (2012)
Support status
Mainstream support ended on January 13, 2015
Extended support until on January 14, 2020

Windows 7 (codenamed Vienna, formerly Blackcomb) is a personal computer operating system developed by Microsoft. It is a part of the Windows NT family of operating systems. Windows 7 was released to manufacturing on July 22, 2009, and became generally available on October 22, 2009, less than three years after the release of its predecessor, Windows Vista. Windows 7's server counterpart, Windows Server 2008 R2, was released at the same time.

Windows 7 was primarily intended to be an incremental upgrade to the operating system intending to address Windows Vista's poor critical reception while maintaining hardware and software compatibility. Windows 7 continued improvements on Luna Aero (the user interface introduced in Windows Vista) with the addition of a redesigned taskbar that allows applications to be "pinned" to it, 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 input. A new "Action Center" interface was also added to provide an overview of system security and maintenance information, and tweaks were made to the User Account Control system to make it less intrusive. Windows 7 also shipped with updated versions of several stock applications, including Internet Explorer 8, Windows Media Player, and Windows Media Center.

In contrast to Windows Vista, Windows 7 was generally praised by critics, who considered the operating system to be a major improvement over its predecessor due to its increased performance, its more intuitive interface (with particular praise devoted to the new taskbar), fewer User Account Control popups, and other improvements made across the platform. Windows 7 was a major success for Microsoft; even prior to its official release, pre-order sales for 7 on the online retailer Amazon.com had surpassed previous records. In just six months, over 100 million copies had been sold worldwide, increasing to over 630 million licenses by July 2012, and a market share of 47.17% of "desktop operating systems" as of November 2016 according to Net Applications, making it the most widely used version of Windows.

Visual stylesEdit

Types of Windows 7 themes

A comparison of the four visual styles included in Windows 7

A comparison of the four visual styles included in Windows 7 has four distinct visual styles.
Luna Aero
Windows 7's default visual style, Luna Aero, is built on a new desktop composition engine called Desktop Window Manager. Luna Aero introduces support for translucency effects (Luna), live thumbnails, window animations, and other visual effects (for example Windows Flip 3D), and is intended for mainstream and high-end video cards. To enable these features, the contents of every open window are stored in video memory to facilitate tearing-free movement of windows. As such, Luna Aero has significantly higher hardware requirements than its predecessors. The minimum requirement is for 128 MB of graphics memory, depending on resolution used. Luna Aero (including Windows Flip 3D) isn't included in the Starter and Home Basic editions.
Luna Basic
This style has aspects that are the same to Windows XP's "Luna" visual style with the addition of subtitle animations such as those found on progress bars. It does not employ the Desktop Window Manager, as such, it does not feature transparency or translucency, window animation, Windows Flip 3D or any of the functions provided by the DWM. The Luna Basic mode does not require the new Windows Display Driver Model (WDDM) for display drivers, and has similar video card requirements to Windows XP. For computers with video cards that are not powerful enough to support Luna Aero, this is the default graphics mode. Prior to Service Pack 1, a machine that failed Windows Genuine Advantage validation would also default to this visual style.
Windows Classic
The Windows Classic theme is similar to that of Windows 9x, Windows 2000 and Microsoft's Windows Server line of operating systems. It does not use the Desktop Window Manager, and does not require a WDDM driver. As with previous versions of Windows, this visual style supports color schemes, which are collections of color settings. Windows 7 includes six old school themes: four high-contrast themes and the default themes from Windows 98 (titled "Windows Classic") and Windows 2000/Windows ME (titled "Windows Standard").

Windows 7 editionsEdit

Windows 7 edition comparison chart
Features Starter Home Basic Home Premium Professional Enterprise Ultimate
Licensing scheme OEM licensing Retail and OEM
licensing in

emerging markets

Retail and OEM
licensing
Retail, OEM and

volume licensing

Volume licensing Retail and OEM
licensing
Maximum physical memory (RAM) (32-Bit) 2 GB 4 GB 4 GB 4 GB 4 GB 4 GB
Maximum physical memory (RAM) (64-Bit) N/A 8 GB 16 GB 192 GB 192 GB 192 GB
Maximum physical CPUs supported 1 1 1 2 2 2
Built-in AVCHD support No Yes Yes Yes Yes Yes
Multiple monitors No Yes Yes Yes Yes Yes
Fast user switching No Yes Yes Yes Yes Yes
Desktop Window Manager No Yes Yes Yes Yes Yes
Windows Mobility Center No Yes Yes Yes Yes Yes
Printing via the Internet No Yes Yes Yes Yes Yes
Parental Controls No Yes Yes Yes Yes Yes
64-bit edition available? No Yes, but not in retail SKUs Yes Yes Yes Yes
Change desktop background or visual styles No Yes Yes Yes Yes Yes
Internet Explorer 11 Yes Yes Yes Yes Yes Yes
Office 2016 Yes Yes Yes Yes Yes Yes
Luna Aero No Partial Yes Yes Yes Yes
Internet connection sharing No No Yes Yes Yes Yes
Built-in DVD (MPEG-2 and Dolby Digital) decoder No No Yes Yes Yes Yes
Multi-touch No No Yes Yes Yes Yes
Windows Media Center No No Yes Yes Yes Yes
Windows Media Player remote media experience No No Yes Yes Yes Yes
Premium games included No No Yes Yes Yes Yes
HomeGroup support Join only Join only Create or join Create or join Create or join Create or join
Back up to network with Backup and Restore Center No No No Yes Yes Yes
Act as host for Remote Desktop Services No No No Yes Yes Yes
Dynamic disks No No No Yes Yes Yes
Encrypting File System No No No Yes Yes Yes
Location-aware printing No No No Yes Yes Yes
Presentation mode No No No Yes Yes Yes
Group Policy No No No Yes Yes Yes
Offline files and folder redirection No No No Yes Yes Yes
Windows Server domain joining No No No Yes Yes Yes
Virtual PC No No No Yes Yes Yes
Software restriction policies No No No Yes Yes Yes
Remote administration tools No No No Yes Yes Yes
Active Directory Lightweight Directory Services (AD LDS) No No No Yes Yes Yes
AppLocker No No No Create policies, but can't enforce Create and enforce policies Create and enforce policies
Aero glass remoting No No No No Yes Yes
Windows Media Player multimedia redirection No No No No Yes Yes
Audio recording over Remote Desktop Connection No No No No Yes Yes
Multi-display Remote Desktop Connection No No No No Yes Yes
Enterprise search scopes No No No No Yes Yes
Federated search No No No No Yes Yes
BitLocker Drive Encryption No No No No Yes Yes
BranchCache Distributed Cache No No No No Yes Yes
DirectAccess No No No No Yes Yes
Subsystem for Unix-based Applications No No No No Yes Yes
Supports Multilingual User Interface packages No No No No Yes Yes
Virtual desktop infrastructure (VDI) enhancements No No No No Yes Yes
Virtual desktop infrastructure (VDI) licensed No No No No Yes Yes
VHD booting No No No No Yes Yes
Switching between any of the 37 available languages No No No No Yes Yes
Features Starter Home Basic Home Premium Professional Enterprise Ultimate