My exchange server is playing up recently rebooted unexpcted error, frontend transport stopping and not starting same for message transport.
So looked at updating it from CU3 to CU11 but getting the mailbox server service is not installed on this server when it is and the only server doing all roles.
It also reports not schema user logged on as when i am even created a new account with sechema admin and the others to make sure not just the account at fault.
Was some other errors but resolved them by hotfixes etc
OS is Server 2012 fully updated
Only Exchange 2013 installed and ClamWin AV
I have managed to prep the domain but not the schema.
Also tried just updating to CU4 being SP1 just in case the big jump was the issue from CU3 to CU11.
Really need to get it updated and hopefully doing so will resolve the issues being experienced.
Any ideas/fixes would be appreciated