ERROR 0x80073701 - 2021-06 Cumulative Update for Windows …
https://answers.microsoft.com/en-us/windows/forum/all/error-0x80073701-2021-06-cumulative-update-for/62c80bae-43db-48aa-abbb-f8fd0c3a24a5
WebERROR 0x80073701 - 2021-06 Cumulative Update for Windows 10 Version 21H1 for x64-based Systems (KB5004476) It gets to 20% installation, pauses for six minutes, and then fails with a vague error message. I've used sfc /scannow, chkdsk /f, dism and other tools attempt to fix this problem.
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