Microsoft KB Archive/252902

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XADM: Alpha Store Crash After You Apply Windows NT 4.0 Service Pack 4

Article ID: 252902

Article Last Modified on 10/27/2006


  • Microsoft Exchange Server 5.5 Standard Edition, when used with:
    • the hardware: DEC Alpha

This article was previously published under Q252902

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


After you apply Microsoft Windows NT 4.0 Service Pack 4 (SP4) or later on an Alpha computer that is running Exchange Server 5.5, you may experience a Dr. Watson crash in the information store.


Starting in Windows NT 4.0 SP4, there are changes in the heap manager that may prevent the information store from allocating memory that it had previously freed.


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.

  1. Start Registry Editor (Regedt32.exe), and locate the following registry key:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Image File Execution Options

  2. Click the Image File Execution Options key, and then click Add Key from the Edit menu to create a new key with the name "store.exe" (without the quotation marks). You can leave the Class field blank. This Key Name entry should not include a path, only the name of the executable itself.
  3. Click the new key you created in step 2, and then click Add Value from the Edit menu to create the Value Name: DisableHeapLookaside and Data Type: REG_SZ.
  4. Click OK, and then type 1 in the String field.

    Summary for the above entries:

    Key Name: store.exe

    Value Name: DisableHeapLookaside
    Data Type: REG_SZ
    String: 1

  5. You do not usually need to restart the system to see the results. You can usually simply restart the Exchange Server information store because this registry value is inspected during each process initialization. However, you may need to restart the computer to properly restart the information store.


For additional information about the new heap manager in Windows NT 4.0, click the article number below to view the article in the Microsoft Knowledge Base:

195008 Heap Manager Change in Service Pack 4 and Windows 2000

195009 Application Access Violation or Hang After Applying SP4

Keywords: kbnofix kbprb KB252902