Windows 7 and Windows Server 2008 R2 SP1 helps keep your PCs and servers on the latest support level.
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What's included in Windows 7 Service Pack 1 (SP1)
Windows 7 Service Pack 1 (SP1) is an important update that includes previously released security, performance, and stability updates for Windows 7. SP1 also includes new improvements to features and services in Windows 7, such as improved reliability when connecting to HDMI audio devices, printing using the XPS Viewer, and restoring previous folders in Windows Explorer after restarting.