7601

7601 is the internal build identifier used by Microsoft to denote the Windows 7 Service Pack 1 (SP1) family, and the corresponding Windows Server 2008 R2 SP1 builds. In Windows versioning, Windows 7 and Windows Server 2008 R2 share the same kernel, and 6.1.7601 is the build number most commonly associated with SP1.

Development and release

Windows 7 was released in 2009, with Service Pack 1 following on February 22, 2011. The SP1 build is identified by the 7601 build number and represents a rollup of security updates, reliability improvements, and performance fixes accumulated since the original Windows 7 release. SP1 did not introduce major new features, but it ensured continued support and compatibility for the operating system. The SP1 package was distributed through standard update channels, including Windows Update and WSUS, and was applicable to both client Windows 7 installations and Windows Server 2008 R2 installations.

Technical details

The SP1 build is typically represented in system information as version 6.1.7601, sometimes displayed as 6.1 (Build 7601: Service Pack 1). This build is part of the Windows NT family and is common to both Windows 7 and Windows Server 2008 R2 deployments. After SP1, additional updates continued to be released as part of ongoing support and security maintenance for these platforms.

See also

Windows 7, Windows Server 2008 R2, Service packs.