This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
An important update is available "Security Update for SQL Server 2008 R2 Service Pack 2 (KB2977320)" but every time I try to install it the error code 643 appears. I'm on a desktop PC.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Answer accepted by question author
Hi,
You may try the solution here:
http://windows.microsoft.com/en-us/windows/windows-update-error-80070643#1TC=windows-7
You can try returning to the previous restore point. If it fails, try repairing .NetFramework. Follow these steps.
Remove .NET Framework with Aaron Stebner's removal tool and reinstall fresh copy of .NET Framework
http://www.raymond.cc/blog/uninstall-microsoft-net-framework-with-aaron-stebner-cleanup-tool/
http://blogs.msdn.com/b/astebner/archive/2008/08/28/8904493.aspx
