Hi grasshopper,
Well, diffrent message this time.
I changed the password like you said, and restarted the vCenter Single sign on (is it a bad idea)....?
And after i fireup the vsphere web client installation, i got the error message that you can see in the screen shot, and further more, you can see that there is no VM_ssoreg.log file in the TEMP folder.
What do you suggest to do grasshopper?