Hi, I wonder if anyone would be so kind as to offer some guidence on our 'little' (haha)issue. Randomly The Microsoft Exchange Information Store Service is falling overon our Exchange 2003 server. I can start it back up again easily but it keep reoccuring. We are running Exchange 2003 with SP2 on a Windows Server 2003 Standard Edition. Below are the three errors that are generated in the Apllication Log... Event Type:ErrorEvent Source:MSExchangeISEvent Category:General Event ID:9673Date:29/08/2007Time:15:27:58User:N/AComputer:2K3-COLART-MXDescription:An exception with code 0xc00000fd was thrown in module C:\WINDOWS\system32\kernel32.dll; some parameters and their values were <Exception address - 77e69b43>. A significant section of the call stack is in the data section. For more information, click http://www.microsoft.com/contentredirect.asp.Data:00000: 30 30 e2 4b 9f bd e5 77 00KŸw00008: 00 00 00 00 01 00 00 00 ........00010: 00 00 00 00 00 00 00 00 ........then... Event Type:ErrorEvent Source:MSExchangeISEvent Category:General Event ID:9659Date:29/08/2007Time:15:27:58User:N/AComputer:2K3-COLART-MXDescription:The Microsoft Exchange Information Store encountered an unexpected exception 0xC00000FD at address 77E69B43 while processing a request for user boughtl. For more information, click http://www.microsoft.com/contentredirect.asp.Data:0000: 45 00 63 00 44 00 6f 00 E.c.D.o.0008: 52 00 70 00 63 00 45 00 R.p.c.E.0010: 78 00 74 00 32 00 00 00 x.t.2... then... Event Type:ErrorEvent Source:Microsoft Exchange ServerEvent Category:NoneEvent ID:1000Date:29/08/2007Time:15:28:01User:N/AComputer:2K3-COLART-MXDescription:Faulting application store.exe, version 6.5.7638.2, stamp 434353c1, faulting module kernel32.dll, version 5.2.3790.4062, stamp 46264680, debug? 0, fault address 0x00029b43. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.Data:0000: 41 00 70 00 70 00 6c 00 A.p.p.l.0008: 69 00 63 00 61 00 74 00 i.c.a.t.0010: 69 00 6f 00 6e 00 20 00 i.o.n. .0018: 46 00 61 00 69 00 6c 00 F.a.i.l.0020: 75 00 72 00 65 00 20 00 u.r.e. . ANY advice would be greatly appreciated! Many Thanks

What's your patch levels for Exchange? I assume you looked up these events on technet. Looks like it has something to do with corrupt messages. Can you perform an offline defrag?

Did you ever get this resolved? I am having a similar problem.