Windows upgrade to 21H1 failed. User profile suffix does not match. Error code 0x800707E7

T

ThomasFlowers1

My laptop is currently running Windows 10 v.1909. I tried updating a couple of times and each time it failed with error code 0x800707E7 where setuperr.log says "User profile suffix does not match, update cannot continue". I didn't make much of an effort to fix it at the time and now Windows Update tried to update to v.21H1, which I still get the exact same error. I feel like I need to fix it now. I first ran the normal Windows Update procedure to download and install version 21H1 and after a few reboots I get a black screen saying "Undoing the changes made to your computer". I did some resea

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