Windows Upgrade Help and more

This. Yeah, and after the BIOS update, you'll want to make sure the TPM setting is actually turned on in there—it's often off by default. Let me know if that works.

Same here. This happened to me. The PC Health Check app actually told me my motherboard's TPM was disabled in the BIOS, which was the real culprit.

Yeah, and if the manufacturer's site doesn't have Windows 11 drivers, try installing the Windows 10 version in compatibility mode—that often does the trick.

Can confirm. Yeah, that error's a headache. A quick tip: try temporarily disconnecting any non-essential USB devices before running the upgrade again—sometimes that clears it up.

Agreed. This happened to me too. I had to manually enable fTPM in my AMD BIOS, it was hidden under a weird security menu.

You could also try clearing your browser cache or using a different browser to see if it loads properly.