Smart Card token is not mapped inside a session.
Certutil -scinfo pauses at "Analyzing card in reader"
Smart card was however mapped in RDP.
The issue is with the Token Driver build. Different driver builds resulted in different behaviors - 1st was working locally and over RDP and the 2nd was working locally only. Obtain the exact build used by the Smart card token vendor. This build works correctly.
Contact the vendor for correct CSP.
The wrong version of smart card CSP software is used.