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ITsVISTA KB-Link: KB2523134

OpenMutex may return the handle to a mutex that is deleted from the namespace in Windows Vista or in Windows Server 2008

Consider the following scenario:

  • You have a resource that is shared with several threads in Windows Vista or in Windows Server 2008.
  • You control threads to access the resource by using a named mutex object.

In this scenario, you may encounter the following issues:

  • Applications that use mutex stop responding.
  • The shared resource is corrupted.

This issue may occur if the following conditions are true:

  • A named mutex object is opened and closed repeatedly.
  • The named mutex object has the same name every time that it is opened.
There is a download that resolves this issue. See Hotfixes for details.
32-bit Download: Contact Microsoft
64-Bit Download: Contact Microsoft

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB2523134.

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