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Windows 7: Windows Update Agent install fails, Error Code 800F081F

10 Sep 2014   #1
thanme

Windows 7 Home Premium x64
 
 
Windows Update Agent install fails, Error Code 800F081F

Hi there,

I'm having an issue with a laptop running Windows 7 Home x64 SP1. It has failed to install Windows Update Agent 7.6.7600.320 and keeps trying every time I try to run updates.

I've downloaded the installer and tried to run it manually, but that gives me the error 0x80070002

I've attached my CBS log from the last time I attempted the install. Any help will be much appreciated!


My System SpecsSystem Spec
.
10 Sep 2014   #2
NoelDP

Microsoft Community Contributor Award Recipient

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

The v320 update installer isn't commonly available (unless you know where to look) - where did you attempt to download it from?

Here's the error-sequence from your log...
Code:
2014-09-10 23:15:06, Info                  CBS    Exec: Staging Package: WUClient-SelfUpdate-Core-UIComp~31bf3856ad364e35~amd64~pt-PT~7.6.7600.256, Update: UI, PinDeployment: amd64_microsoft-windows-w..oyment-languagepack_31bf3856ad364e35_7.6.7600.256_pt-pt_76bae7f7dbc23d63
2014-09-10 23:15:06, Info                  CBS    Calling client to resolve source, cannot find file 'wuaueng.dll.mui' at path: \\?\C:\Windows\Servicing\Packages\amd64_microsoft-windows-w..ient-core.resources_31bf3856ad364e35_7.6.7600.256_zh-cn_8aefebe76d4c7c4f\wuaueng.dll.mui
2014-09-10 23:15:06, Error                 CBS    Exec: Failed to pre-stage package: WUClient-SelfUpdate-Core-AdmComp~31bf3856ad364e35~amd64~pt-PT~7.6.7600.320, file: wuaueng.dll.mui, source: \\?\C:\Windows\Servicing\Packages\amd64_microsoft-windows-w..ient-core.resources_31bf3856ad364e35_7.6.7600.256_zh-cn_8aefebe76d4c7c4f\wuaueng.dll.mui, sandbox: (null) [HRESULT = 0x800f081f - CBS_E_SOURCE_MISSING]
2014-09-10 23:15:06, Info                  CBS    Failed to gather all required files. [HRESULT = 0x800f081f - CBS_E_SOURCE_MISSING]
2014-09-10 23:15:06, Info                  CBS    Failed to gather all missing files for package: WUClient-SelfUpdate-Core-TopLevel~31bf3856ad364e35~amd64~~7.6.7600.320 [HRESULT = 0x800f081f - CBS_E_SOURCE_MISSING]
2014-09-10 23:15:06, Info                  CSI    0000001c@2014/9/10:15:15:06.724 CSI Transaction @0x26e580 destroyed
2014-09-10 23:15:06, Error                 CBS    Failed to pre- stage package: WUClient-SelfUpdate-Core-TopLevel~31bf3856ad364e35~amd64~~7.6.7600.320 [HRESULT = 0x800f081f - CBS_E_SOURCE_MISSING]
2014-09-10 23:15:06, Info                  CBS    Perf: Stage chain complete.
2014-09-10 23:15:06, Info                  CBS    Failed to stage execution chain. [HRESULT = 0x800f081f - CBS_E_SOURCE_MISSING]
I assume that your installation of Windows isn't Portuguese or Chinese??

Unfortunately, the only cure I know of at the moment is a repair install.

If you can wait a while, I may be able to help find a better answer - but it's going to be at least the weekend before I have enough free time.
My System SpecsSystem Spec
10 Sep 2014   #3
thanme

Windows 7 Home Premium x64
 
 

Thanks for the input. I was afraid you were going to say that.

I wasn't involved in the install of the laptop, but it's highly unlikely. What would cause that to happen?

I honestly can't remember where I found the installer. I've been googling this error pretty hard, so it could have come from anywhere.

Cheers for getting back to me! If I get a chance to do a repair install before the weekend, I'll let you know.
My System SpecsSystem Spec
.

11 Sep 2014   #4
redwolfe98

windows xpsp3, 32-bit
 
 

thanme, i am going to disagree with noelDP.. i don't think you need to reformat your harddrive just because the update for "windows update agent" isn't installing..

you asked what causes the error.. i believe that the problem is because the "windows updater" is detecting a problem with the "hash" for one-or-more files within the "softwaredistribution" folder, which is used by the windows updater..

when the update failed to install, it generated an "error code: 80070002", which you mentioned in your first post.. if you had done a google-search for "error code 80070002", it would have taken you to this webpage:

Windows Update error 80070002 - Windows Help

follow the instructions on the webpage, posted above, deleting the files that the instructions say to delete, within folders that are within the "softwaredistribution" folder.. be careful to only delete the files that the instructions say to delete..

essentially, the instructions say:

1. temporarily "stop" the "windows update service", in "services"

2. delete all of the content within the "datastore" folder, at "c:\windows\softwaredistribution\datastore".. (don't delete the folder itself)..

3. delete all of the content within the "download" folder, at "c:\windows\softwaredistribution\download".. (don't delete the folder itself)..

4. re-"start" the "windows update service", in "services"..

see if that resolves the problem..

if the problem isn't resolved, try running the "system update readiness tool", which is mentioned on the same webpage, posted above.. here is a link for the webpage for the "system update readiness tool":

What is the System Update Readiness Tool? - Windows Help

here is a link to a webpage with some information about troubleshooting problems with installing updates:

Unable to install updates in Windows Vista, Windows 7, Windows Server 2008 and Windows Server 2008 R2
My System SpecsSystem Spec
12 Sep 2014   #5
NoelDP

Microsoft Community Contributor Award Recipient

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

NOBODY mentioned a reformat here.
The errors indicate a problem with the Windows installation, and not the Update - and the OP has already run SFC and CheckSUR, which is why I made the response I did.
My System SpecsSystem Spec
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