We upgraded systems from macOS 10.13.3 to 10.13.4, and now are having issues with two applications accessing our smartcard. Everything was working fine under 10.13.3 with Express for Smart Card 5.4.2.
Following the upgrade one of the applications (a Kerberized ssh client) sometimes sees the smartcard and works after a reboot. But, if the smartcard is removed and reinserted, the application then cannot see it. The second application (current Cisco Anyconnect VPN client) never appears to recognize the card. I tried completely uninstalling (following the directions in the forum) Express for Smart Card, and then reinstalling it, but we are still having the issue.
On a side note, applications like Safari, which use Apple's built-in smartcard support, are working fine with the smartcard. Any help is appreciated.