Hi,
Thanks for posting in Q&A platform.
Regarding of your issue, I found some similar threads for your reference. Please kindly check if the following links were helpful:
http://www.pwrusr.com/system-administration/solvedmicrosoft-network-policy-server-nps-error-code-22
https://getsatisfaction.com/aerohive/topics/nps-the-client-could-not-be-authenticated-because-the-extensible-authentication-protocol-eap-type-cannot-be-processed-by-the-server
Please Note: Since the websites are not hosted by Microsoft, the links may change without notice. Microsoft does not guarantee the accuracy of this information.
Hope my answer will help you!
---Please Accept as answer if the reply is helpful---
Best Regards,
Sunny