Windows Upgrade Help and more

Agreed. This happened to me too. I used the same registry bypass and it worked, but honestly, I just ended up going back to Windows 10.

That error code often points to a driver conflict. I'd check for any pending BIOS updates from your motherboard manufacturer and make sure all your chipset drivers are current.

This. I had the same problem. For me, it was also that my TPM 2.0 was disabled in the BIOS, so I had to turn that on along with Secure Boot.

I had the same problem. For me, it was a specific driver that wasn't fully compatible, even though my hardware met the requirements.

Another option is to double-check if TPM 2.0 and Secure Boot are enabled in your BIOS, since those are common blockers the installer doesn't always explain well.