Hello, I am attempting to configuring Client Certificate Authentication on a Pulse Connect Secure 8.1R1 On the Windows 7 client device, I am getting the error : Missing certificate. Check that your certificate is valid and up-to-date, and try again In the User Access logs I am getting: ... user1(CertUserRealm)[] - Login failed using auth server CertAuthn(Certificate Server). Reason: No Certificate ... Primary authentication failed for /CertAuthn from 192.168.1.123 A Device Certificate has been created and loaded which is sucesfully validated by the client when connecting to the device with a browser. Valid certificates for the Trusted client CAs, a root and an issuing CA, have been loaded. An Authentication Server of type Certificate Server has been created, User Name Template left as default A Sign-in policy has been created and linked to an Active Directory Authentication User Realm, which works successfully. Another sign-in policy has also been created and linked to the Certificate Authentication Realm. The User Authentication Realm - Authentication Policy - Certificate setting is configured to: Only allow users with a client-side certificate... These are the instructions that have been followed: http://www.juniper.net/techpubs/software/ive/guides/howtos/How_To_Certificates.pdf The Windows 7 client device, is enrolled with my CA and has a valid certificate with Client Authentication and Server Authentication Purposes. I am about to start trawling through a TCP dump but is there anything obvious I have missed, or auth troubleshooting at the client side that would be helpful? Thank you, Alastair. ... View more