Hi,
1.
Have you made any changes to your computer prior to this issue?
2.
Does this issue occur while installing this particular update?
3.
Do you receive any error message along with the error code?
4.
Which fixit did you run?
5.
Which updates fail to install?
You may follow the suggestions and check.
Method 1:
Run the fix it from the article.
Fix the problem with Microsoft Windows Update that is not working
http://support.microsoft.com/mats/windows_update/
Method 2:
Place the computer in a clean boot state.
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
http://support.microsoft.com/kb/929135
Note: After troubleshooting follow Step 7: Reset the computer to start as usual
Also see:
Unable to install updates in Windows Vista, Windows 7, Windows Server 2008 and Windows Server 2008 R2
http://support.microsoft.com/kb/2509997
Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify
the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore
the registry, click the windows help article below.
Back up the registry
http://windows.microsoft.com/en-us/windows-vista/Back-up-the-registry
Troubleshoot problems with installing updates
http://windows.microsoft.com/en-us/windows-vista/Troubleshoot-problems-with-installing-updates
Let us know if this helps.
