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Mstscax.dll file leaks handles on a Remote Desktop Protocol 8.1 client in Windows 7 or Windows Server 2008 R2

View products that this article applies to.

Symptoms

Assume that you have Remote Desktop Protocol (RDP) 8.1 applied on a computer that's running Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1. When you exit the RDP connection, handles are not closed. This causes a handle leak in the Remote Desktop Active X control Mstscax.dll.

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Resolution

Hotfix information

A supported hotfix is available from Microsoft Support. 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, go to the following Microsoft website:
http://support.microsoft.com/contactus/?ws=support
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 have the following installed:

Restart requirement

You may have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.

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File information
The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 7 and Windows Server 2008 R2 file information and notes

Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
File nameFile versionFile sizeDateTimePlatform
Mstscax.dll6.3.9600.177946,131,20010-Apr-201512:37x86
Mstscax.mofNot Applicable2,05526-Nov-201322:44Not Applicable
Rdvidcrl.dll6.3.9600.16415856,06410-Apr-201512:37x86
Tsgqec.dll6.3.9600.1641553,24810-Apr-201512:37x86
For all supported x64-based versions of Windows 7 and Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Mstscax.dll6.3.9600.177947,077,37610-Apr-201512:44x64
Mstscax.mofNot Applicable2,05526-Nov-201322:49Not Applicable
Rdvidcrl.dll6.3.9600.164151,057,79210-Apr-201512:44x64
Tsgqec.dll6.3.9600.1641562,97610-Apr-201512:44x64
Mstscax.dll6.3.9600.177946,131,20010-Apr-201512:37x86
Mstscax.mofNot Applicable2,05526-Nov-201322:44Not Applicable
Rdvidcrl.dll6.3.9600.16415856,06410-Apr-201512:37x86
Tsgqec.dll6.3.9600.1641553,24810-Apr-201512:37x86

Additional file information for Windows 7 and Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
File namePackage_1_for_kb3042839~31bf3856ad364e35~x86~~6.1.1.0.mum
File versionNot Applicable
File size1,844
Date (UTC)10-Apr-2015
Time (UTC)23:48
PlatformNot Applicable
File namePackage_2_for_kb3042839~31bf3856ad364e35~x86~~6.1.1.0.mum
File versionNot Applicable
File size1,844
Date (UTC)10-Apr-2015
Time (UTC)23:48
PlatformNot Applicable
File namePackage_for_kb3042839_sp1~31bf3856ad364e35~x86~~6.1.1.0.mum
File versionNot Applicable
File size1,734
Date (UTC)10-Apr-2015
Time (UTC)23:48
PlatformNot Applicable
File nameX86_735ca2daf0f3f99e2d0c0d5535e0492a_31bf3856ad364e35_7.2.7601.23032_none_3b0d6a0f3218d2d6.manifest
File versionNot Applicable
File size722
Date (UTC)10-Apr-2015
Time (UTC)23:48
PlatformNot Applicable
File nameX86_microsoft-windows-t..s-clientactivexcore_31bf3856ad364e35_7.2.7601.23032_none_ec067e9d66cc3ace.manifest
File versionNot Applicable
File size147,472
Date (UTC)10-Apr-2015
Time (UTC)20:32
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 7 and Windows Server 2008 R2
File nameAmd64_08fac36688f2a613dd54028ffd4784ac_31bf3856ad364e35_7.2.7601.23032_none_6744e2abdcf41330.manifest
File versionNot Applicable
File size1,092
Date (UTC)10-Apr-2015
Time (UTC)23:48
PlatformNot Applicable
File nameAmd64_microsoft-windows-t..s-clientactivexcore_31bf3856ad364e35_7.2.7601.23032_none_48251a211f29ac04.manifest
File versionNot Applicable
File size147,478
Date (UTC)10-Apr-2015
Time (UTC)20:41
PlatformNot Applicable
File namePackage_1_for_kb3042839~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size2,094
Date (UTC)10-Apr-2015
Time (UTC)23:48
PlatformNot Applicable
File namePackage_2_for_kb3042839~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size2,094
Date (UTC)10-Apr-2015
Time (UTC)23:48
PlatformNot Applicable
File namePackage_for_kb3042839_sp1~31bf3856ad364e35~amd64~~6.1.1.0.mum
File versionNot Applicable
File size1,744
Date (UTC)10-Apr-2015
Time (UTC)23:48
PlatformNot Applicable
File nameX86_microsoft-windows-t..s-clientactivexcore_31bf3856ad364e35_7.2.7601.23032_none_ec067e9d66cc3ace.manifest
File versionNot Applicable
File size147,472
Date (UTC)10-Apr-2015
Time (UTC)20:32
PlatformNot Applicable

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Status

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

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References

Learn about the terminology that Microsoft uses to describe software updates.

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Keywords: kb, kbautohotfix, kbqfe, kbhotfixserver, kbfix, kbexpertiseinter, kbsurveynew, kbbug

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Article Info
Article ID : 3042839
Revision : 1
Created on : 1/7/2017
Published on : 5/12/2015
Exists online : False
Views : 182