I've tried this on 2 servers. 1st server was a DC I found out that it should be a non-DC server so I moved it to non-DC server. Added the "Exchange Trusted Subsystem" group to the Local Admins group of that server and it still has the same error. Reboot all servers involved and it still has the same error. It doesn't create the Folder or Folder Share for the Quorum although the wizard says it is completeing, albeit with this error message.