Microsoft KB Archive/295649

= XADM: You May Be Unable to Start the Information Store and Event Messages May Be Displayed =

Article ID: 295649

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q295649



IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
After you run Performance Optimizer in Verbose mode, the information store may not start. Also, the following 5000, 1120, and 188 events may be logged in the Application log in Event Viewer:

Event ID: 1120

Source: MSExchangeIS

Description:

Error 0xfffffad0 initializing the MS Exchange information store database.

Event ID: 5000

Source: MSExchangeIS

Description:

Unable to initialize the MS Exchange information store service. Error 0xfffffad0.

Event ID: 188

Source: Ese97

Description:

MSExchangeIS (359) System parameter stop clean flush threshold (5700) is less than start clean flush threshold (9500).



CAUSE
This behavior can occur because the Buffer Threshold Low Percent value is missing from the following registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem



RESOLUTION
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To resolve this behavior, you must add the missing DWORD value in the following registry location:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem

 Start the registry editor (Regedit.exe). Open the following subkey:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem

 Add the DWORD value: Buffer Threshold Low Percent. Add a hexadecimal value of 3.

Additional query words: exch2kp2w

Keywords: kbprb KB295649

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