APM Machine Cert Auth unable to find the private key
I have been doing some testing within a customer environment for a SSL VPN solution. As part of the solution, a machine cert must be checked and validated before the logon page. My problem is that everytime the process exits through the "Found" rule, which according to F5 doc means no private key has been found. But my testing is based on a standalone edge client on windows 7 that includes the machine checker service, I also use local admin for all testing.
Looking into the cert itself, it definitely has an associated private key, there is an interesting issue that the key has a blank subject field, the DNS FQDN is specified in the SAN field. I doubt whether this is related to the issue that edge client can't find the private key.
Has anyone seen this before.
Thanks in advance.