EDIT: ASUS has a solution "Once you’re not able to upgrade device operation system from Windows 10 to Windows 11 with error code0xC1900101or0x80070002occurred as below." Here is the link to the article https://www.asus.com/support/FAQ/1047338/
I want to add two more to ferchomuri's answer:
- You find the driver: Device Manager > System devices > ASUS System Control Interface v3
- You must prevent Windows Update from automatically reinstalling the above driver, or else you will get the 0xc1900101 code again. See below
Prevent Windows Update to automatically install the ASUS driver:
- Win + X
- Select "System"
- Under "Related settings" select "Advanced system settings"
- Click the tab "Hardware"
- Under "Device Installation Settings" click "Device Installation Settings"
- Select "No" to prevent the automatically download of manufacturers apps...
- Delete the driver under Device manager
- Restart the computer
Then try to update to Win 11.
Sorry about the spoonfeeding, but this is what I needed. Happy Xmas!