XWEB: .MMP file Created by MS Exchange Active Server

ID: Q166599

The information in this article applies to:

SYMPTOMS

When you use Microsoft Exchange Active Server components to access information on a computer running Microsoft Exchange Server, files with an .mmp extension are created in your %windir% directory by default.


CAUSE

The .mmp file is a temporary file used by Active Messaging to store certain profile information during the active session. This file should be deleted after the user logs off and the session is closed.

Because these files must be created dynamically, the Microsoft Internet Information Server (IIS) Anonymous Logon account (IUSR_Server by default) needs to have change permissions on the %windir% directory.


STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0. This problem was corrected in the latest Microsoft Exchange Server 5.0 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

After you install Microsoft Exchange Server 5.0 Service Pack 1, you can change the directory that the temporary .mmp file are created in.

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows NT. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

If the following registry key is present, the .mmp files will be created there instead of the \Winnt directory: 

   HKEY_LOCAL_MACHINE/Software/Microsoft/Windows Messaging Subsystem
To create the registry entry, do the following:

  1. Start Registry Editor (Regedt32.exe) and go to the following key: 
    
   HKEY_LOCAL_MACHINE/Software/Microsoft/Windows Messaging Subsystem


  2. On the Edit menu, click Add Value.


  3. Type the following values: 
    
      String Value: ProfileDirectory
      Value Data:   Path to the directory you want the temporary files
                    to be created in. Example: C:\MyComputer\Temporary.


If the registry key/value is not present, the .mmp files are created in the Winnt directory as before.

NOTE: The IIS Anonymous Logon account (IUSR_Server by default) must have change permissions for the directory that you specified as the value for ProfileDirectory. 


Keywords          : kbusage kbbug5.00 XCLN kbfix5.00.sp1 
Version           : 5.0
Platform          : WINDOWS 
Issue type        : kbbug

Last Reviewed: April 26, 1999