@David Schrag
Hi,
A result code of 0xC1900101 is generic and indicates that a rollback occurred. In most cases, the cause is a driver compatibility issue.
You could try to use the Device Manager updating drivers manually:
Go to Start > type Device Manager > click the first result
Expand the list of devices.
The device causing error 0xC1900101 will likely appear with a yellow exclamation mark.
Right-click the problematic driver > select Update Driver Software to install the latest updates.
Click Uninstall to completely remove it.
To troubleshoot a failed upgrade that has returned a result code of 0xC1900101, analyze the extend code to determine the Windows Setup phase, and see the Resolution procedures section later in this article.
More information is then obtained for the troubleshooting.
For your reference:
https://learn.microsoft.com/en-us/windows/deployment/upgrade/upgrade-error-codes
Hope above information can help you.
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