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

Some time we get the below error during the database synchronization in AX 2012. 

There could be many solution for this error

1. Check all the users in AX specially the service account like bc proxy account, AOS account and batch account. 
2. if the problem still not solve then check your access on SQL database. 
3. we have workaround as well. Just uncheck the Execute Business operation in CIL and do the database synchronization again.