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You cannot start Windows Live Messenger 14.0 after you install a Windows service pack

Support for Windows XP has ended

Microsoft ended support for Windows XP on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

This article has been archived. It is offered "as is" and will no longer be updated.
Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.
After you upgrade your operating system to a newer service pack, you cannot start Windows Live Messenger 14.0 on the computer.

For example, you upgrade Windows Vista Service Pack 1 to Windows Vista Service Pack 2 (SP2). If Windows Live Messenger 14.0 is running when you install Windows Vista SP2, it may run until you exit the program. After you exit Windows Live Messenger, you will be unable to start the program again. If Windows Live Messenger 14.0 is installed but was not running when you install Windows Vista SP2, Windows Live Messenger will not start.
When Windows Live Messenger detects an operating system upgrade, Windows Live Messenger will try to repair itself. This issue can occur because Windows Live Messenger 14.0 tries to use an incorrect Microsoft Installer package during the repair process.

This is a known issue with Windows Live Messenger 14.0. Under normal circumstances the repair will complete and Windows Live Messenger will run as expected.
To resolve this issue, download and reinstall Windows Live Messenger.

Important Do not uninstall Windows Live Messenger before you reinstall it.

To download Windows Live Messenger, visit the following Microsoft Web site:
Microsoft is researching this problem and will post more information in this article when the information becomes available.
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Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Article ID: 972634 - Last Review: 01/16/2015 18:17:15 - Revision: 1.0

Windows Live Messenger, Windows Vista Service Pack 1, Windows Vista Service Pack 2, Microsoft Windows XP Service Pack 3

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