Hi @Blake Landes
I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to "Accept " the answer.
Issue:
trying to incorporate the NPS extension on our RADIUS server to add MFA through Entra. It's not working and I'm not sure if it's due to the licensing. I'm wanting to do this for MFA for connecting with our Anyconnect VPN. Our VPN was working until I made these changes.
Solution:
You find the solution that it needs the Entra P1 or P2 licensing for MFA with NPS extension on our RADIUS server.
If you have any other questions or are still running into more issues, please let me know. Thank you again for your time and patience throughout this issue.
Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.