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

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Article ID: 269536 - View products that this article applies to.
This article was previously published under Q269536
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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.
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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.

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".


Article ID: 269536 - Last Review: November 2, 2013 - Revision: 4.0
Applies to
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
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