Microsoft KB Archive/811280

= The Microsoft Directory Synchronization Service May Stop Intermittently =

Article ID: 811280

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Windows Services for NetWare 5.0

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SYMPTOMS
The Microsoft Directory Synchronization service may stop intermittently. You may receive event ID 7031 (&quot;The Directory Synchronization Service service terminated unexpectedly&quot;).

You may also see event ID 17 intermittently in the Microsoft Directory Synchronization service event log:

The session was unable to start because it is already in progress.

This behavior occurs only if you have many sessions defined (more than 30).



CAUSE
Typically, the Microsoft Directory Synchronization service creates a single thread for each synchronization session that is defined. However, a race condition exists such that the Microsoft Directory Synchronization service might create multiple threads for each session to run. This causes the service not to work correctly if there are more than 62 session threads.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Additional query words: MSDSS

Keywords: kbhotfixserver kbqfe kbprb KB811280

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