- NAC indicates "Authentication request became stale"
- Diagnostics indicate NAC send RADIUS certificate and client never responded
- Client Event log "Schannel" error indicates:
The certificate received from the remote server has been revoked. This means that the certificate authority that issued the certificate has invalidated it. The SSL connection request has failed. The attached data contains the server certificate.
- NAC's RADIUS certificate is seen in the "Revoked" certificates on the certificate authority