The certificate on 1 host could not be verified.

[UfukYETER]

When I adding ESX server to vCenter in both 6.7 and 7.0 versions, I constantly get the following error, what can I do about it. I'm sure the DNS, IP, SM and NTP settings are all correct.

"The certificate on 1 host could not be verified. the sha1 thumbprints of the certificate is listed below. to continue connecting, manually verify this certificate and accept the thumbprint below." 

[TryllZ]

You might want to reconfirm your IP address in the network between hosts that have been issued with certificates. I came across the same issue a few days ago where I had 1 IP address assigned to 2 hosts.

[UfukYETER]

Thank you for your warning. I've done the check on the IP address twice, there is no IP similarity or any conflict on my network.

 

[miyamotosan]

just had the same error.  Turns out it was the username and password that was incorrect.