Error 0xC0000034 during Service Pack 1 installations for Windows 7 (KB975484)
If you get this error you can try to fix this with 2 different options
Method 1: Restore your computer to an earlier point in time by using System Restore
or
Method 2: Delete the poqexec entry from the SetupExecute value (advanced users only)
Read more about how to do both of these at the official support KB article (975484)
Rob
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