I currently am running ESXi 6.5 with a Windows vCenter and trying to use HyTrust KeyControl as the KMS server. For whatever reason, my certificate from the HyTrust server cannot establish trust with my vCenter. I have verified multiple times with VMware support and HyTrust engineer that my configuration on vCenter and HyTrust server is correct. In the logs, we can actually see the certificate information. We also see the cert info when we use openssl. There should be nothing in between the two servers. My vCenter has all firewall settings turned off and the HyTrust server allows all connections. I have attached a screenshot of the error I am currently seeing. Any suggestions are much appreciated as I am continuously running into a wall with this.