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Exchange MAPI call 'OpenMsgStore' failed

Posted on 2011-05-13
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Last Modified: 2012-05-11
Receiving the following error in the logs after a few hours of exchange being started:
Event Type:	Error
Event Source:	MSExchangeSA
Event Category:	MAPI Session 
Event ID:	9175
Date:		13/05/2011
Time:		08:32:32
User:		N/A
Computer:	SERVER01
Description:
The MAPI call 'OpenMsgStore' failed with the following error: 
The attempt to log on to the Microsoft Exchange Server computer has failed.
The MAPI provider failed.
Microsoft Exchange Server Information Store
ID no: 8004011d-0512-00000000 

For more information, click http://www.microsoft.com/contentredirect.asp.

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(Exchange 2003, SBS2003)

I have restarted the Microsoft Exchange Information Store service, which fixes the problem for a short while but this is by no means a 'fix'. Any ideas on the cause?

Thanks,
UncleVirus
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Question by:UncleVirus
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Expert Comment

by:AdamRobinson
ID: 35754386
Is this a problem that just began?  If not, have you tried checking that the permissions on the MDBDATA folder are correct?  

I agree with you regarding the stock MS answer of "start the information store" not being incredibly helpful.  :)
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Author Comment

by:UncleVirus
ID: 35754937
This has just started happening - No changes to the system made what-so-ever. There are all sorts of weird email flow problems and has remained unresolved today...
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Author Comment

by:UncleVirus
ID: 35754955
Also seeing this in the event viewer upon restarting services:
The Exchange store 'First Storage Group\Public Folder Store (SERVER01)' is limited to 18 GB. The current physical size of this database (the .edb file and the .stm file) is <1 GB. If the physical size of this database minus its logical free space exceeds the limit of 18 GB, the database will be dismounted on a regular basis. 

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Accepted Solution

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AdamRobinson earned 2000 total points
ID: 35755240
I'd say you're shutting down because you've exceeded the size of the stores allowed.  Did you adjust the maximum size of your Information Store in the registry per the ole MS KB suggestions?
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Expert Comment

by:AdamRobinson
ID: 35755255
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Author Comment

by:UncleVirus
ID: 35755258
I've just clocked that - I'm in the process of updating to SP2 (No idea why it wasn't already...) so I can edit the registry and up the limit to 75GB!
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Expert Comment

by:AdamRobinson
ID: 35759344
Excellent.  Good luck, and let us know how it goes!
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Author Closing Comment

by:UncleVirus
ID: 36308886
SP2 and upping the mailbox store limit worked fine. Thanks for your help Adam :-)
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