Will do some more digging around before logging a support call, but has anyone experienced issues with security keys after upgrading an Agent handler? Basically none of the clients can talk to it any more, and it appears that it no longer recognises the security keys they clients are trying to use.
The EPO Server itself is fine, and clients can talk to that happily. EPO server can also see the Agent Handler (and communicate with it)
Looks like after the upgrade, one of the encryption pairs weren't copied over ... Still looking into it, but have resolved the issue by manually copying the certs over.