Forum Discussion
Unable to upgrade from Windows 11 23H2 to later version
When I try and do the feature upgrade to 24H2 2026-05 on a Windows 10 era Dell PC (let's not get ahead of ourselves with 25H2!) the upgrade fails and rolls back. setupdiag points to Error: 0xc190...
The good news is you're right that 0xC1900101-0x40017 with "Post First Boot" usually points to a driver or service that the upgrade process can't stop or migrate properly. The bad news is Windows doesn't exactly print out the name of the culprit on a billboard.