I am in the same position as you. Must be at least 40-50 tries. Spent all day yesterday trying it. Getting very frustrating.
My Windows 10 Version 20H2 will not install the update 0x80004005.
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Anonymous
Have tried 3 times. Message on update page says it did not install and I may try again. This is not a new install. Have been using for couple of years.
Windows for home | Windows 10 | Windows update
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Anonymous
2021-01-31T12:42:15+00:00 -
Anonymous
2021-01-31T16:00:09+00:00 Going the Ubuntu route on all my machines...Windows has gotten too big for their britches!
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Anonymous
2021-01-31T16:03:38+00:00 The problem lies in the 21 machine under my control at work...they can't operate Windows, most of them, little on Ubuntu!
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Anonymous
2021-02-01T22:23:31+00:00 Thanks for your solution!!!
I have just successfully upgraded!! I went around in circles for days trying different solutions.
Only one suggestion, to get this to work I had to boot from a recovery disk, otherwise the BCD file is locked by the OS.
Thanks again!
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Anonymous
2021-02-01T23:32:10+00:00 A member of the community, @Saltgrass, provided numerous suggestions eventually centering on my boot data store being messed up. I applied various commands suggested by Saltgrass to re-configure my boot data store settings and delete a bad entry and my issue was resolved. 20H2 finally installed.