Memory leak in Oleaut32.dll on a Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows Server 2012, Windows 8.1 or Windows Server 2012 R2-based COM server

Symptoms

Consider the following scenario:
  • You have an out-of-process COM server that is running Windows 7 Service Pack 1 (SP1), Windows Server 2008 R2 SP1, Windows 8, Windows Server 2012, Windows 8.1 or Windows Server 2012 R2. 
  • You run an application that is based on Microsoft COM technology on a client computer.
  • The application makes a COM call to the COM server. The client computer uses an interface to pass a SAFEARRAY user-defined data type to the COM server.
In this scenario, a memory leak occurs in Oleaut32.dll on the COM server.

Cause

This issue occurs because Oleaut32.dll does not work correctly when the system frees allocated memory.

Resolution

Update information for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

To resolve this issue in Windows 8.1 or Windows Server 2012 R2, install update rollup 2911106. 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:
2911106 Windows 8.1 and Windows Server 2012 R2 update rollup: January 2014

Update information for Windows RT, Windows 8, and Windows Server 2012

To resolve this issue in Windows RT, Windows 8 or Windows Server 2012, install update rollup 2889784, or install the hotfix that is described in this article. This hotfix is also available at Microsoft Update Catalog. 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:
2889784 Windows RT, Windows 8, and Windows Server 2012 update rollup: November 2013

Hotfix information for Windows 8, Windows Server 2012, Windows 7 SP1, and Windows Server 2008 R2 SP1

To resolve this issue in Windows 8, Windows Server 2012, Windows 7 SP1, or Windows Server 2008 R2 SP1, install the hotfix that is described in this article.

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running Windows 8, Windows Server 2012, Windows 7 SP1, or Windows Server 2008 R2 SP1.

For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.
File information

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

Additional file information
Properties

Article ID: 2870467 - Last Review: Aug 11, 2014 - Revision: 1

Windows RT 8.1, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows Server 2012 R2 Standard, Windows RT, Windows 8, Windows 8 Enterprise, Windows 8 Pro, Windows Server 2012 Datacenter, Windows Server 2012 Datacenter, Windows Server 2012 Datacenter, Windows Server 2012 Datacenter, Windows Server 2012 Essentials, Windows Server 2012 Foundation, Windows Server 2012 Foundation, Windows Server 2012 Foundation, Windows Server 2012 Foundation, Windows Server 2012 Standard, Windows Server 2012 Standard, Windows Server 2012 Standard, Windows Server 2012 Standard, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Enterprise, Windows Server 2008 R2 Datacenter, Windows Server 2008 R2 Foundation, Windows Server 2008 R2 Standard, Windows Web Server 2008 R2, Windows Server 2008 R2 for Itanium-Based Systems, Windows 7 Service Pack 1, Windows 7 Enterprise, Windows 7 Home Basic, Windows 7 Home Premium, Windows 7 Professional, Windows 7 Ultimate

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