Hi John York,
I'm Hendrix, here to help with your query on the Microsoft Q&A forums.
Apologies for any inconvenience you are experiencing. I am happy to help you today.
Here is how to fix the issue step-by-step:
1 - Disconnect from the internet.
2 - Change the product key to the Windows 11 Pro generic key:
VK7JG-NPHTM-C97JM-9MPGT-3V66T
3 - Restart the device. This should downgrade Enterprise to Pro.
4 - Reconnect to the internet and let Windows activate using your purchased license.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Warm regards,
Hendrix Vu | Microsoft Q&A Support Specialist