error: A database error occurred while executing Stored Procedure "EDA_TRUSTEES_GETTRUSTEETOKEN_82" Execution Timeout Expired. The timeout period elapsed prior to completion of the operation or the server is not responding. The wait operation timed out Component: Tridion.ContentManager.CoreService Errorcode: 831 User: NT AUTHORITY\NETWORK SERVICE StackTrace Information Details: at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
It looks like a typical Timeout error on a database pointing to lacking database maintenance or database upgraded or restored, It's expected to run the stats update.
The first thing to check is whether you have regular database maintenance performed? If not, do one (and start doing it on a regular basis, if possible daily) and try again. Database maintenance (Tridion specific) described here.
You could increase the timeouts as described here might help to resolve your issue.
I hope it helps
Have you tried restarting your CM database server and/or looking at the maximum database memory settings, like this? I had a similar issue and I noticed the CM database server was out of memory, so I restarted it to resolve the issue. Then I noticed the database memory settings were set to the default maximum...