Smart card reader works in browser not VPN client

Scenario

A smart card or certificate reader is recognized for browser auth, but the VPN client does not present the certificate for selection.

Recommended Resolution Path

1. Confirm middleware compatibility with the VPN client version.
2. Check whether the client is using the Windows certificate store or a separate PKCS#11 path.
3. Test with another certificate-enabled app to verify reader and certificate health.
4. If only one vendor reader fails, document the supported hardware list clearly.

Technician Notes

Document what changed, what confirmed the fix, and whether the issue points to a broader standards gap worth addressing for the client.