Database Synchronization Error in Ax 2012

If you are facing following error during Database Synchronization Error in Ax 2012.

"Failed to create a session; confirm that the user has the proper privileges to log on to Microsoft Dynamics"

Following solution is suggested from different sources 

1.check the UserSessionService in inbound ports it should be in activate status.

2. You need to  update all records with networkalias field = 'administrator' in dbo.userinfo table .I hope It will works.

2. You may find another demo data database and delete all 'administrator' account but my testing domain. Then you need to sync the db .