HOW TO: Enable Debug Logging in the Microsoft Directory Synchronization Services Tool

This article was previously published under Q269536
This article has been archived. It is offered "as is" and will no longer be updated.
This article contains a reference to the MDSS utility, which is a utility that Microsoft Support provides as-is and does not support. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of the MDSS utility.


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
This article describes how to enable debug logging in the Microsoft Directory Synchronization Services (MSDSS) tool.

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.

When you troubleshoot synchronization issues in the MSDSS tool, you can enable debug logging to capture detailed information about the synchronization process.

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Enabling Detailed MSDSS Logging

  1. Run Registry Editor (Regedt32.exe).
  2. Locate the following key:
  3. Click the Parameter key.
  4. On the Edit menu, click Add Value.
  5. For the value name, type: DebugLogLevel.
  6. For the data type, click REG_DWORD, and then click OK.
  7. For the data value, type: 1, and then click OK. A value of 1 activates logging, and a value of 0 (zero) turns logging off.
  8. Restart the computer.
The logging information is placed in the %Systemroot%\System32\Directory Synchronization\Session Logs folder. The log files are labeled as "Session#-#.log".

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Article ID: 269536 - Last Review: 11/02/2013 22:13:00 - Revision: 4.0

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
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