802.1x NPS / root certificate issue

[the_dude]

Our root certificate authority died about a year ago(unrecoverable). The certificate that it had issued to our NPS server for wireless 802.1x authentication expired yesterday. I stood up a new root cert authority and set the NPS policy to use the new certificate that I generated(constratints>>authentication methods, using PEAP). The security logs on my clients are showing 'audit success' a request was made to authenticate to a wireless network / the operation was successful. I don't see any event viewer errors on the NPS server either....but it won't connect. The only thing that changed was the cert. What am I missing?