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Symptoms

Consider the following scenario:

  • You have computers that are running Windows RT, Windows 8, or Windows Server 2012.

  • You run an application that calls a ReaderWriterLockSlim¬†class in Microsoft .NET Framework 4.0 on the computer.

In this scenario, the application freezes and cannot be used.

Cause

This issue occurs because a deadlock event is not released in .NET Framework 4.0 after it calls into the kernel OS primitive functions.

Resolution

To resolve this issue, install update rollup 2962407. For more information about how to obtain this update rollup package, click the following article number to view the article in the Microsoft Knowledge Base:

2962407 Windows RT, Windows 8, and Windows Server 2012 update rollup: June 2014

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

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