0xC1420127 and 0xC1900403: the upgrade rolls back every single attempt
0xC1420127 and 0xC1900403 show setup failing to service or dismount its image. Read the SetupDiag output, clear the blocker, and rerun the upgrade.
0xC1420127 and 0xC1900403 show setup failing to service or dismount its image. Read the SetupDiag output, clear the blocker, and rerun the upgrade.