Im running a citrix farm on 2008 R2 servers xen app 6.5.. Im not able to get the app center working. Im getting an error in the windows logs event ID 3989 source IMA service. the error states "Citrix XenApp failed to connect to the Data Store. ODBC error while connectinnng to the database: 08001> [Microsoft][DBNETLIB]SQL server does not exist or acccess is denied". We have a seperate server that runs the web interface. This was all working before we had some VM issues late monday night when some servers crashed because of power outage.