Cisco anyconnect 3.1 - Certificate Validation Failure.

Question

When i try to start a SSL VPN connection to the ASA(8.4) with anyconnect 3.1, Cisco anyconnect receives a message saying "No Valid Certificates Available for Authentication".
Prior to the test;
     On the ASA, i have obtain CA certificate and its identity certificate. (Both certificates obtain from windows 2008 CA).
          * ASA identity certificate's have EKU attribute = Server Authentication,   Key Usage = Digital Signature, Key Encipherment.
     On the PC in which anyconnect installed, i have obtain User Certificate (this User certificate also obtain from the same windows 2008 CA)
          * Prior to obtaining User certificate from the windows2008 CA, ASA acts as a SCEP proxy onbehalf of the client PC.
          * User Certificate's has EKU attribute = Client Authentication.
As in the ASDM Logs, it almost work.
In days of troubleshooting, i still could not find the cause of this problem. Error message as appeared on anyconnect;
Is there anyone could help.???
Keshara from Sri Lanka.

Answer 1

Just run into this as well. We have CRL checking turned on. Turned out to be the CRL server was down. But that was the same message I got when the client wouldn't connect.