Hey, On a Exchange 2003 Server with all the latest service packs: When i create an new mailbox store and mount it i get the below error in the event-log: ------------------------------------------------------- Event Type: Error Event Source: EXOLEDB Event Category: Events Event ID: 116 Date: 12-03-2006 Time: 12:24:11 User: N/A Computer: MAILSRV3 Description: Microsoft Exchange OLEDB was unable to initialize event system correctly. Support for store event may have been disabled. HRESULT = 0x8004010f. ------------------------------------------------------- And when i look in the mailbox store the SystemMailbox user object does not get created. I have tryed to deleted the store and recreate it. Does not help. I have olso tryed to create a new store with a different name - same result. The server has 2 working mailbox stores and is part of a setup with 3 Exchange servers (2 Exchange 2000 and 1 Exchange 2003). Does anyone have a clue why this happens ?. Thanks, Jan -