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.

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=supportNote 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.

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 notesImportant 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 name

File version

File size

Date

Time

Platform

Mstscax.dll

6.3.9600.17794

6,131,200

10-Apr-2015

12:37

x86

Mstscax.mof

Not Applicable

2,055

26-Nov-2013

22:44

Not Applicable

Rdvidcrl.dll

6.3.9600.16415

856,064

10-Apr-2015

12:37

x86

Tsgqec.dll

6.3.9600.16415

53,248

10-Apr-2015

12:37

x86

For all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Mstscax.dll

6.3.9600.17794

7,077,376

10-Apr-2015

12:44

x64

Mstscax.mof

Not Applicable

2,055

26-Nov-2013

22:49

Not Applicable

Rdvidcrl.dll

6.3.9600.16415

1,057,792

10-Apr-2015

12:44

x64

Tsgqec.dll

6.3.9600.16415

62,976

10-Apr-2015

12:44

x64

Mstscax.dll

6.3.9600.17794

6,131,200

10-Apr-2015

12:37

x86

Mstscax.mof

Not Applicable

2,055

26-Nov-2013

22:44

Not Applicable

Rdvidcrl.dll

6.3.9600.16415

856,064

10-Apr-2015

12:37

x86

Tsgqec.dll

6.3.9600.16415

53,248

10-Apr-2015

12:37

x86

Additional file information for Windows 7 and Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

File name

Package_1_for_kb3042839~31bf3856ad364e35~x86~~6.1.1.0.mum

File version

Not Applicable

File size

1,844

Date (UTC)

10-Apr-2015

Time (UTC)

23:48

Platform

Not Applicable

File name

Package_2_for_kb3042839~31bf3856ad364e35~x86~~6.1.1.0.mum

File version

Not Applicable

File size

1,844

Date (UTC)

10-Apr-2015

Time (UTC)

23:48

Platform

Not Applicable

File name

Package_for_kb3042839_sp1~31bf3856ad364e35~x86~~6.1.1.0.mum

File version

Not Applicable

File size

1,734

Date (UTC)

10-Apr-2015

Time (UTC)

23:48

Platform

Not Applicable

File name

X86_735ca2daf0f3f99e2d0c0d5535e0492a_31bf3856ad364e35_7.2.7601.23032_none_3b0d6a0f3218d2d6.manifest

File version

Not Applicable

File size

722

Date (UTC)

10-Apr-2015

Time (UTC)

23:48

Platform

Not Applicable

File name

X86_microsoft-windows-t..s-clientactivexcore_31bf3856ad364e35_7.2.7601.23032_none_ec067e9d66cc3ace.manifest

File version

Not Applicable

File size

147,472

Date (UTC)

10-Apr-2015

Time (UTC)

20:32

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File name

Amd64_08fac36688f2a613dd54028ffd4784ac_31bf3856ad364e35_7.2.7601.23032_none_6744e2abdcf41330.manifest

File version

Not Applicable

File size

1,092

Date (UTC)

10-Apr-2015

Time (UTC)

23:48

Platform

Not Applicable

File name

Amd64_microsoft-windows-t..s-clientactivexcore_31bf3856ad364e35_7.2.7601.23032_none_48251a211f29ac04.manifest

File version

Not Applicable

File size

147,478

Date (UTC)

10-Apr-2015

Time (UTC)

20:41

Platform

Not Applicable

File name

Package_1_for_kb3042839~31bf3856ad364e35~amd64~~6.1.1.0.mum

File version

Not Applicable

File size

2,094

Date (UTC)

10-Apr-2015

Time (UTC)

23:48

Platform

Not Applicable

File name

Package_2_for_kb3042839~31bf3856ad364e35~amd64~~6.1.1.0.mum

File version

Not Applicable

File size

2,094

Date (UTC)

10-Apr-2015

Time (UTC)

23:48

Platform

Not Applicable

File name

Package_for_kb3042839_sp1~31bf3856ad364e35~amd64~~6.1.1.0.mum

File version

Not Applicable

File size

1,744

Date (UTC)

10-Apr-2015

Time (UTC)

23:48

Platform

Not Applicable

File name

X86_microsoft-windows-t..s-clientactivexcore_31bf3856ad364e35_7.2.7601.23032_none_ec067e9d66cc3ace.manifest

File version

Not Applicable

File size

147,472

Date (UTC)

10-Apr-2015

Time (UTC)

20:32

Platform

Not Applicable


Status

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

References

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

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