This is the webclient SSL cert? Or is there another cert that I should check and verify?
From the 5.5 vCenter server (embedded PCS), connected with openssl and dumped the SSL cert chain (from the web client @ https://<FQDN>:9443). Opened it in Windows cert manager and verified that the FQDN was correct and that the cert had not expired (expires 2022). Also from the vCenter server, checked by pinging the FQDN to ensure that the IP resolves correctly. I even manually edited the Window's host file to include the IP and FQDN.