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Unable to install update for .NET Framework 4 KB2160841

Problem Description:

 Unable to install .Net Frame work update (Security Update for .NET Framework 4 on Windows XP, Windows Server 2003, Windows Vista, Windows 7, Windows Server 2008, Windows Server 2008 R2 for x64 based systems KB2160841).

The error code returned is Code 66A

Cause of the Problem:

 The .Net Framework 4 client that is installed is damaged or corrupt

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 Open the control panel, and go to add/remove programs or Uninstall programs if you are using Windows Vista or Windows 7.

Scroll through the list and find the .NET Framework 4 Client Profile

Click on the uninstall program button and choose the repair option when prompted between uninstalling and repairing.

The process may take 15 minutes or more to complete.

After the repair is complete, restart the computer and try the update again and it should work.

Related Programs and Devices:
Windows XP , Windows 7 , Windows Vista , Windows Server 2008 , Windows Server 2008 R2 , .NET Framework 4

Last Updated: 03/10/2011 02:19 PM

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