I recently migrated/upgraded my exchange 2007 server to exchange 2010. The exchange 2007 server has been removed and everything is ok, but... All of our mobile phones are syncing except the two Windows Phone 7 devices in the company. I bought and installed a new certificate for the new server from Verisign. We have SSL turned on and the Andriods & iPhones work fine, but the Windows Phone 7s give an 80072f06 certificate error. I have found several articles and most refer to domian admins which neither of the users are. I would appreciate any ideas on this.