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Troubleshooting Exceptions: System.DuplicateWaitObjectException 

A DuplicateWaitObjectException exception is thrown if the array of WaitHandle objects passed to WaitAll or WaitAny contains any duplicate operating system handles.

Associated Tips

  • Make sure the WaitHandle objects passed to WaitAll or WaitAny are unique.
    A WaitHandle array cannot contain multiple references to the same object.

Remarks

The Common Language Runtime (CLR) provides a thread-synchronization mechanism based on synchronization objects waiting for execution in an array of WaitHandle objects.

See Also

Tasks

How to: Find Out More About an Exception with the Exception Assistant

Reference

DuplicateWaitObjectException