I've had no luck figuring out this issue, and before opening a ticket with VMware, I wanted to ask here.
The single-sign on feature of vsphere client used to work perfectly. Domain authentication worked with no problems. Then one day I got a certificate issue. I have since re-installed all of vSphere, no luck. Today I managed to get a little closer by re-installing the single-sign on and WEb Client service.
I was able to login to the WEb Client and add our AD domain back into vcenter, however when I try to login using the Windows vSphere Client, I get the following error:
* certificate signature failure
I've delete all the saved certificates as detailed in this article:
But no luck, same error.