Fixes an issue in which you cannot install Windows XP Mode on a computer that is running Windows 7 when you have an AMD Bulldozer-based multicore processor installed.

Provides step-by-step instructions on how resolve program compatibility issues in Windows 7.

Fixes an issue in which the Windows logo key remains pressed in Windows XP Mode after you unlock a Windows 7 SP1-based computer. This issue occurs if Windows XP Mode is running in full-screen mode on the computer.

Windows Virtual PC is the latest Microsoft virtualization technology. It lets you run many productivity applications in a virtual Windows environment, with a single click, directly from a Windows 7-based computer.

Describes the Application Compatibility Update for Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 that is dated April 2011.

For a limited time after upgrading Windows, you have the option to go back to the previous version you had installed. This can be useful if you encounter issues with the new version, such as compatibility problems with your software or hardware, or if you simply prefer the way things worked before.

Windows Virtual PC is the latest Microsoft virtualization technology. It lets you run many productivity applications in a virtual Windows environment, with a single click, directly from a Windows 7-based computer.

Application compatibility updates trigger several changes in Windows XP Professional x64 edition, in Windows Server 2003, in Windows Vista, in Windows Server 2008, in Windows 7, in Windows Embedded Standard 7, or in Windows Server 2008 R2.

Learn how to get older apps or programs to run on Windows 10 or Windows 11 by adjusting compatibility settings.

If you have Windows Vista or Windows 7, there are two methods to determine whether you are running a 32-bit or a 64-bit version. If one does not work, try the other.