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Article ID: 938080 - Last Review: January 16, 2015 - Revision: 7.0

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Consider the following scenario.
  • You type a keyboard shortcut on a Windows Vista-based computer.
  • You are working in a Terminal Services session that was started by using Remote Desktop Connection 6.0 (RDC 6.0).
In this scenario, some keys in the keyboard shortcut may remain active. Therefore, in the Terminal Services session of the Remote Desktop window, some later keystrokes are interpreted as part of the previous keyboard shortcut. For example, this problem occurs if the following conditions are true:
  • You lock the local computer by pressing the Windows logo key+L keyboard shortcut.
  • You unlock the local computer.
  • The Remote Desktop window is active.
When you press any key, various Windows keyboard shortcuts occur in the Terminal Services session. For example, when you press E in the Terminal Services session, Windows Explorer starts as if the Windows logo key is still held down.

Note Windows Explorer should start when you press the Windows logo key+E keyboard shortcut.


This issue occurs because of an error in Remote Desktop Connection 6.0. When you press a keyboard shortcut on the local computer, Remote Desktop Connection 6.0 may send only the "key-down" message to the remote session. Remote Desktop Connection 6.0 may not send the "key-up" message for certain modifier keys such as the ALT, SHIFT, and Windows logo keys.


Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791  ( ) How to obtain the latest Windows Vista service pack

Hotfix information

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 this specific problem. 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 Web site: (
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.


No prerequisites are required.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

You do not have to make any changes to the registry.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Windows Vista, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Update.mumNot Applicable1,80605-Jun-200714:41Not Applicable
X86_af7377a27733d119afe9929fddc6f6a8_31bf3856ad364e35_6.0.6000.20612_none_af451b4837d6175a.manifestNot Applicable72205-Jun-200714:41Not Applicable
X86_microsoft-windows-t..s-clientactivexcore_31bf3856ad364e35_6.0.6000.20612_none_2e8894a3e1a596ce.manifestNot Applicable168,92005-Jun-200714:43Not Applicable
Aaclient.mofNot Applicable1,09707-Jan-200705:26Not Applicable
Mstscax.mofNot Applicable1,96707-Jan-200705:26Not Applicable
Windows Vista, x64-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Amd64_2f717519b2475113a4a958128df893b8_31bf3856ad364e35_6.0.6000.20612_none_524aa2bfb5264ff0.manifestNot Applicable1,09205-Jun-200714:41Not Applicable
Amd64_microsoft-windows-t..s-clientactivexcore_31bf3856ad364e35_6.0.6000.20612_none_8aa730279a030804.manifestNot Applicable168,98205-Jun-200714:47Not Applicable
Update.mumNot Applicable2,05605-Jun-200714:41Not Applicable
Aaclient.mofNot Applicable1,09707-Jan-200705:26Not Applicable
Mstscax.mofNot Applicable1,96707-Jan-200705:26Not Applicable


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.

More information

By default, RDC 6.0 is included in Windows Vista. You can install RDC 6.0 in Microsoft Windows XP and in Microsoft Windows Server 2003.

For more information, 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
If you use RDC 6.0 on a Microsoft Windows XP-based computer or on a Microsoft Windows Server 2003-based computer, apply hotfix 936970. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
936970  ( ) Error message when you try to save a document in a 2007 Office program to a redirected drive in Windows Vista: "There has been a network or file permission error"
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
925876  ( ) Remote Desktop Connection (Terminal Services Client 6.0)
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
186607  ( ) Understanding the Remote Desktop Protocol (RDP)

Applies to
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
  • Windows Vista Business
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise
  • Windows Vista Home Premium
  • Windows Vista Ultimate
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