Missing Certificate Information in NAC Manager and OneView Events
"Certificate Expiration" and "Certificate Issuer" columns are blank in NAC Manager / End Systems tab as well as in OveView / Control/ End Systems
NAC version 7.0.6 and higher in a "Proxy RADIUS" AAA configuration 802.1x EAP-TLS Authentication
These columns are not applicable when NAC is in a Proxy RADIUS AAA configuration (or if the Authentication Type is PEAP). When either of these two conditions is present, what is being seen with the blank columns is per design.
As noted, this is per design if NAC's AAA Config is in a Proxy RADIUS setup. These columns in the UI are applicable to Local Auth or LDAP Auth only, when using EAP-TLS Authentication Type.
One possible alternative is to use EAP-TLS with "LDAP" or "Local" Authentication rather than Proxy RADIUS.