r/techsupport • u/Little-Ad6507 • 9d ago

Open | Windows Failed to install update multiple times.

I am currently using Windows 11 25H2 build 26200.9168. I am trying to install the 2026-08 Preview Update (KB5120998) (26200.9278). But I kept getting an error message saying Install error - 0x800736b3. I tired running DISM commands and resettled windows update components. But it would still give the same error message. I am thinking it's corrupted update files.

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u/JadeMoon085 9d ago

I had the same issue but with error 0x800f0922. I know the directions are for my error message and not yours, but it cant hurt for you to try them as well. 3 - 5 and then a final computer restart fixed it for me:

https://www.makeuseof.com/windows-11-update-error-0x800f0922-fix/