Windows 10 - Windows Update fails - KB4579311 - 0x80073701

Hello,

Windows Update fails as per above.

Also cannot add Windows features: same error

Have tried sfc and DISM; no errors reported.

Extract from CBS.log

2020-10-16 15:00:36, Error                 CSI    0000015b (F) HRESULT_FROM_WIN32(ERROR_SXS_ASSEMBLY_MISSING) #2408195# from Windows::ServicingAPI::CCSITransaction::ICSITransaction_PinDeployment(Flags = 0, a = Microsoft-Windows-ProjFS-Deployment, version 10.0.19041.1, arch amd64, nonSxS, pkt {l:8 b:31bf3856ad364e35}, cb = (null), s = (null), rid = 'Microsoft-Windows-ProjFS-Package~31bf3856ad364e35~amd64~~10.0.19041.1.0f1f6213531945ccfd5f99e2750305ed', rah = (null), manpath = (null), catpath = (null), ed = 0, disp = 0)[gle=0x80073701]

Appreciate suggestions to resolve

Thanks

VW

Hi vw,
I am Sumit, an Independent Advisor and a 3 year Windows Insider MVP here to help.

Did the past month patches install successfully?


The first step would be to try resetting Windows updates using an automatic script. See:

http://www.yourwindowsguide.com/2015/12/windows...
Make sure you run the script as an administrator.
Please let us know if you need any assistance.

Disclaimer:
This is a non-Microsoft website which would provide accurate and safe information. Watch out for ads on the site which are frequently classified as a PUP (Potentially Unwanted Products). There is no need to buy paid products to fix your computers as they do more harm than good sometimes.
Sumit

Available 6 PM - 8 AM PST
It is always good to include your PC Specs, make and model in the question
Never Call the Phone numbers received in Emails from the Microsoft Community

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Hello Sumit,

To the best of my knowledge Windows Updates have been working on this computer in the past.

The script reported that it completed successfully.

However after restarting the computer, the update failed as before.

Regards,

VW

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Thank you. Apparently, it looks like an assembly file is missing. Can you check if the Advanced troubleshooting steps here help you?

https://support.microsoft.com/en-in/help/408983...
Sumit

Available 6 PM - 8 AM PST
It is always good to include your PC Specs, make and model in the question
Never Call the Phone numbers received in Emails from the Microsoft Community

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Hello Sumit,

None of the options worked, I think I will have to try a repair install

Thanks

VW

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I am afraid yes :(

Try doing a repair install. A repair Install keeps everything including Files and applications and reinstalls Windows.

http://www.yourwindowsguide.com/2016/06/how-to-...
http://www.tenforums.com/tutorials/16397-repair...

The best and the easiest way is to use first method in the first article.

Disclaimer:
This is a non-Microsoft website which would provide accurate and safe information. Watch out for ads on the site which are frequently classified as a PUP (Potentially Unwanted Products). There is no need to buy paid products to fix your computers as they do more harm than good sometimes.
Sumit

Available 6 PM - 8 AM PST
It is always good to include your PC Specs, make and model in the question
Never Call the Phone numbers received in Emails from the Microsoft Community

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Not seeing this on any of my 5 Windows 10 machines.
Windows 10 Pro Slow Ring

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My windows shows blue screen error and bow finally my hard drive crashed 😭😭

I tried to reinstall windows but hard disk isn't readable anymore its totally wasted😿😿😿

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Last updated October 27, 2020 Views 1,384 Applies to: