Error 0x80073701 while installing KB4512508 in Windows 10 V1903

Well here we go AGAIN! Another 'Patch Tuesday' and yet another update that refuses to install. Last month there was a Cumulative Update that would not install and now we have another one, 2019-08 Cumulative Update for Windows 10 Version 1903 for x64-based Systems (KB4512508) -Error 0x80073701, with the same error code. What on earth is going on at Microsoft? It's getting to the stage where I am seriously considering dumping my PC and getting a Mac! With the failed install of last month I tried everything possible to find a solution but all to no avail. Followed all the 'solutions' posted on the Community to the letter but none worked. Come on Microsoft...sort yourselves out as this is getting beyond a joke.

*Modified title for accuracy*

*Original title: 2019-08 Cumulative Update for Windows 10 Version 1903 for x64-based Systems (KB4512508) -Error 0x80073701*



Please refer the guided walk-through mentioned in this support article to fix update issues:

If that doesn't helps you, try this:

Open administrative Command Prompt and type following commands one-by-one followed by Enter key.

net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

Ren C:\Windows\System32\catroot2 Catroot2.old

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

Close Command Prompt and check if you can install the Windows Update then.

If issue still persists, try downloading KB4512508 manually using Update Catalog and install it:

If nothing works, reset Windows Update components using this guide:

Hope this helps!


Microsoft MVP (Windows IT Pro), since 2014 · Windows Insider MVP · Windows Help (

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Question Info

Last updated October 22, 2020 Views 42,022 Applies to: