I install vcenter 6, and picked a password. At the end of setup, I went to the web client, and entered in administrator for the username, and the password I had chosen. That didn't work.
I figured maybe I mistyped the password during setup, so I uninstalled, rebooted, and reinstalled. I was more careful this time, but had the same issue.
I uninstalled and reinstalled again. This time, I put the password in a document, and carefully pasted it into both the setup screen, and then the login screen when that came up. Same issue--failed login.
Any ideas?