MetaFrame Presentation Server cannot contact the license server Empty error message

If you receive the following error message “MetaFrame Presentation Server cannot contact the license server Empty” when logging on your Citrix Server, do the following.

1. Check the Event Log on the Citrix Server
   You should see the following error under the System Log – This computer running MetaFrame Presentation Server will now stop accepting connections. This server is no longer in or could not enter a licensing grace period.
2. Now check the Event Log on your licensing Server
   You should see the following error under the Application Log Error: 9002, Severity: 17, State: 6
   The log file for database ‘CITRIX’ is full. Back up the transaction log for the database to free up some log space.
3. If you do not see the following errors then please visit http://support.citrix.com/article/CTX112408
4. If you do see the errors in your Event Log then you must truncate the inactive transactions in your transaction log and shrink the Citrix transaction log file. The easiest way to do this is to firstly backup your Citrix database log file and then run the following query.
   
   DBCC SHRINKFILE(CITRIX_log, 10)