Event 9175: The MAPI Call 'OpenMsgStore' Failed with the Following Error

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This article was previously published under Q262456

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SYMPTOMS

The following event may be logged in the Application event log on a computer that is running Exchange 2000 Server or Exchange Server 2003:

Event Type: Error
Event Source: MSExchangeSA
Event Category: MAPI Session
Event ID: 9175
Date: 5/8/2000
Time: 8:21:36 PM
User: N/A
Computer: Computer_name
Description:
The MAPI call 'OpenMsgStore' failed with the following error:
The Microsoft Exchange Server computer is not available. Either there are network problems or the Microsoft Exchange Server computer is down for maintenance. The MAPI provider failed.
Microsoft Exchange Server Information Store
ID no: 8004011d-0526-00000000

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CAUSE

This issue can occur if the information store is not running. When the information store is stopped and the System Attendant is still running, the System Attendant keeps the MAPI session active. This issue can also occur if a mailbox store failed to mount.

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RESOLUTION

To resolve this issue, verify that the information store is running. If the store is not running, attempt to start it. If the information store is running, and the event is still logged, verify that the mailbox stores are mounted. If they are not mounted, attempt to mount them.

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