I am seeing this same error code repeatedly (Upgrade to Windows 11 - Error 0xc1900101). My PC only has SSD and nvme storage, and I do not really like the idea of cleaning it out and installing a base W10 again. My PC meets all the requirements for W11.
This error seems to impact many Insider users and prevents me (and others) from doing any testing of W11, which the Insider program is all about.
Is any work being done to resolve this installation issue, or are there any proven method to get past this error code?
Thanks,
Alfred Christensen
0xc1900101 errors are generic rollback errors, usually caused by a faulting driver. There is not a single fix for the error. You will need to run SetupDiag to get a better idea of what is causing the issue. To reduce the risk of getting this error, you should ensure you are running the latest drivers from your device manufacturer's website (not Windows Update or Device Manager).
SetupDiag will also give you an extended error code that can help.
-Eddie