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Windows Server 2008: Windows Update Fails with error 80070020

Posted on 2014-10-28
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Last Modified: 2015-02-19
I have two servers, a domain controller running SBS 2011, and a member server running Windows Server 2008 R2, that are both getting error 80070020 when running Windows Update. Neither has an AV program on-board, I've tried everything I can find on-line to fix this (Windows Fix-Its, performing a clean boot, manually cleaning out update files, running System File Checker), but none of this fixes the problem.

Can anyone point me in the right direction here?
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Question by:ssittig
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by:Lionel MM
Lionel MM earned 125 total points
ID: 40410473
Try this--I have used it in the past to fix Windows Update Issues--rename it to fixwindowsupdate.cmd (or .bat) then run it from a  command prompt/Dos Window
FixWindowsUpdate.Txt
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by:weinberk
weinberk earned 125 total points
ID: 40410741
Have you tried running in safe mode with networking?  It's not an elegant fix, but it might work.
Hope this helps.
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by:Rodney Barnhardt
Rodney Barnhardt earned 125 total points
ID: 40410761
You mention there is no AV on either server. Is it possible it has been infected with a root kit or something along those lines? There are a few free ones such as TDSSKiller or Trend Micro's RootKit Buster that you could run to verify. I wiped a system one time, reloaded the OS, and still could not do updates. Ran the TDSSKiller and found a root kit on the drive that was not removed from a standard format. Removed it with that product and it updated fine after that.
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Assisted Solution

by:Pramod Ubhe
Pramod Ubhe earned 125 total points
ID: 40411060
you can run this tool to see if there are any issues -

http://www.microsoft.com/en-in/download/details.aspx?id=14668
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ssittig earned 0 total points
ID: 40610564
None of these solutions worked unfortunately. Great ideas. Server still won't update. Will be re-imaging.
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Author Closing Comment

by:ssittig
ID: 40618497
Other solutions did not work
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