WindowsUpdate of .Net 3.5 SP1 (KB951847) failed to install several times. .Net 3.5 SP1 already installed

windows-server-2003windows-update

I have a Windows 2003 server x86, which I have manually installed .Net 3.5 SP1, but now, the Windows Update:

Microsoft .NET Framework 3.5 Service
Pack 1 and .NET Framework 3.5 Family
Update for .NET versions 2.0 through
3.5 (KB951847) x86

failed to install with error:

Error Code: 0x80070643
Try to
install the update again, or request
help from one of the following
resources.

What to do?

Best Answer

Have you tried running the installation package outside of Windows Update? You find the package in %WINDIR%\SoftwareDistribution\Download\Install once you've tried to install it. Normally, this way you get better error messages

Updated: You may try this: Stop service Windows Updates from services.msc and delete or rename SoftwareDistribution folder afterwards. Start Windows Updates again and it should recreate the folder structure (at least when new updates arrive)

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