Windows 7 SP1 update failed, causing Windows Update errors

Well; one thing i can tell ya is that when it says cannot update while files in are in use basically means you need to restart your system. Try restarting and see what happens. It may tell you either when the system is in the process of restarting; that its configuring updates. Do not do a hard power down as that can cause even more issues while its updating.

Please follow the Windows Update Posting Instructions and post the requested data
If the file is too large (8MB compressed), remove the older CBSPersist cab files until the final file is below the limit - you can always post them separately after zipping them. (the forum doesn't allow the upload of bare CAB files, for a number of reasons)

There's no CheckSUR.log file in the upload - please upload it.

The CBS.log contains a lot of (variations on) the following error

Code:

2014-08-06 18:22:18, Info                  CBS    Appl: Partial install Status testing, package: Package_for_KB976933~31bf3856ad364e35~amd64~~6.1.7601.17514, partially installed (true/false), 0
2014-08-06 18:22:18, Info                  CBS    Failed to find package from aggreated XML string, package: Package_for_KB976933~31bf3856ad364e35~amd64~fr-FR~6.1.7601.17514 [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
2014-08-06 18:22:18, Info                  CBS    Failed to find package from deployment update [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
2014-08-06 18:22:18, Error                 CBS    Failed to check whether package is partially installed, package: Windows7SP1-KB976933~31bf3856ad364e35~amd64~~6.1.1.17514 [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
2014-08-06 18:22:18, Info                  CBS    Failed to evaluate external applicability for package update: 976933-0_neutral_PACKAGE [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
2014-08-06 18:22:18, Error                 CBS    Failed to call external evaluate applicability on package: Package_for_KB976932~31bf3856ad364e35~amd64~~6.1.1.17514, Update: 976933-0_neutral_PACKAGE [HRESULT = 0x80070490 - ERROR_NOT_FOUND]

This is an unfortunately common one.

Once we see the CheckSUR we can decide on a way forward.

Try this...

open an Elevated COmmand Prompt and run the following command...

fsutil resource setautoreset true C:\

then close the command prompt window wait 10 minutes, and reboot - try Windows Updates again.

OK - do a Search for files named 'pending.xml' in the Windows folder (it'll take a couple of minutes) - copy all found to your desktop, and then zip them up and upload them to your reply