Cannot update computers from Windows 10 Pro 20H2 to 21H2

[Jeff Curtiss (jeffc)]

I have 25 computers to update. I've successfully done about half. Now I have (2) in a row that will not update from 20H2 to 21H2. Like many posts I've come across nothing has helped.What happens: I get through the process and get to 48% at the Windows is updating your computer screen at the end and I get a blue screen with "Driver_pnp_watchdog". Windows proceeds to roll back to the previous version successfully. When I log in I get the message "The installation failed in the FIRST_BOOT phase with the error during the SYSPREP operation. 0xC1900101 – 0x30018"What I've tried to fix: I've

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