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Event ID: 485 Source: ESENT

Source
Level
Description
<process name< (<PID>) An attempt to delete the file "<file name>" failed with system error <error code>: "<error message>". The delete file operation will fail with error <error code>.
Comments
 
See ME298390, ME816421, and MSEX2K3DB for details on this event.
Process wuaueng.dll - From a support forum:

Register the following files using regsvr32

regsvr32 %systemroot%\system32\wuapi.dll
regsvr32 %systemroot%\system32\wuaueng.dll
regsvr32 %systemroot%\system32\wuaueng1.dll
regsvr32 %systemroot%\system32\wucltui.dll
regsvr32 %systemroot%\system32\wups.dll
regsvr32 %systemroot%\system32\wups2.dll
regsvr32 %systemroot%\system32\wuweb.dll
regsvr32 %systemroot%\system32\softpub.dll
From a support forum: In my case, I excluded the file location specified in the event description from my virus scanner and the errors were gone.
From  support forum: I had a similar error, Event ID 485:
?Catalog Database (956) Catalog Database: An attempt to delete the file "C:\Windows\system32\CatRoot2\edbtmp.log" failed with system error 5 (0x00000005): "Access is denied. ". The delete file operation will fail with error -1032 (0xfffffbf8).

Performed the DLL registrations above. These failed:
regsvr32 %systemroot%\system32\wuaueng.dll
regsvr32 %systemroot%\system32\wuaueng1.dl
regsvr32 %systemroot%\system32\wuweb.dll
regsvr32 %systemroot%\system32\wucltui.dll

I found a post that said if you disable UAC for your account, wuaueng.dll would succeed, and this worked after disabling UAC and rebooting. The other 3 still did not load, but I have no more Event Log errors and the SMS client installed correctly with one exception - an error stating it "failed to schedule Software Protection service for re-start" (Event ID 16385). I restarted the Software Protection service and no error so far.

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