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Windows 7: Windows Update failed error code: 800F0900

21 Oct 2014   #1
Pickupman66

Windows 7 32 bit
 
 
Windows Update failed error code: 800F0900

Hoping someone can help me here. I have seen Noel DP post several resolutions but each seem custom to the errors the other user gets.

I ran SFC/Scannow with no errors. Ran Checksur and got errors.

Unavailable repair files:
servicing\packages\WUClient-SelfUpdate-Core-TopLevel~31bf3856ad364e35~x86~~7.6.7600.320.mum
servicing\packages\WUClient-SelfUpdate-Core-TopLevel~31bf3856ad364e35~x86~~7.6.7600.320.mum
servicing\packages\WUClient-SelfUpdate-Core-TopLevel~31bf3856ad364e35~x86~~7.6.7600.320.cat
servicing\packages\WUClient-SelfUpdate-Core-TopLevel~31bf3856ad364e35~x86~~7.6.7600.320.cat

CBS log and CheckSUR Log attached.


My System SpecsSystem Spec
.
21 Oct 2014   #2
matts6887

Windows 7 ultimate 64-bit
 
 

This sounds to me like you may have to try going in and deleting the windows update catalog files and re running windows update and see what happens. If that doesnt solve the issue post back and we can take it from there.
My System SpecsSystem Spec
21 Oct 2014   #3
Pickupman66

Windows 7 32 bit
 
 

when running windows update it states there is an update for windows update and that it needs to restart. it then crashes and fails with this error code. how do you remove the catalog files from Windows update?

Incidentally I searched several areas and saw resolutions here that Noel NP posted for other people.
My System SpecsSystem Spec
.

21 Oct 2014   #4
matts6887

Windows 7 ultimate 64-bit
 
 

try the steps in the following link:

Windows Update - Reset
My System SpecsSystem Spec
21 Oct 2014   #5
Pickupman66

Windows 7 32 bit
 
 

Already done that. Same issue.
My System SpecsSystem Spec
21 Oct 2014   #6
NoelDP

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
 
 

NOTHING will fix the problem except properly replacing the missing files - I'll post a protocol later.
My System SpecsSystem Spec
21 Oct 2014   #7
NoelDP

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
 
 

I've uploaded a file - p66aa.zip - to my OneDrive at Noel's OneDrive
Please download and save it.
Right-click on the downloaded file, and select Extract all…
Extract to the default location - which will create a new folder p66aa in the same place.
Open this folder - there should be one folder inside it (Packages)

Copy the content of the Packages folder to the folder
C:\Windows\Temp\CheckSur\Servicing\Packages


Now run the CheckSUR tool again (it may take a while)

Post the new CheckSUR.log file, and the CheckSUR.persist.log file.
My System SpecsSystem Spec
21 Oct 2014   #8
Pickupman66

Windows 7 32 bit
 
 
Thank you

Thank you, I have downloaded the protocol and am running Checksur now. will report back in a few hours after I get done with other family duties.
My System SpecsSystem Spec
21 Oct 2014   #9
Pickupman66

Windows 7 32 bit
 
 

Fixed the issue.

thank you so very much. too bad this has to be a custom fix for so many.
My System SpecsSystem Spec
22 Oct 2014   #10
NoelDP

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
 
 

CheckSUR itself is the general fix - people like me are left to deal with the stuff that it can't fix. Mostly it gets around 90% of such errors, missing the later or rarer ones - or it'd end up being the same size as Windows itself!
My System SpecsSystem Spec
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 Windows Update failed error code: 800F0900




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