Microsoft KB Archive/216840

= How to Determine if Active Desktop Is Installed =

Article ID: 216840

Article Last Modified on 1/24/2007

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APPLIES TO


 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 4.01 Service Pack 1
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Internet Explorer 4.0 128-Bit Edition
 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 4.01 Service Pack 1
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Internet Explorer 4.0 128-Bit Edition
 * Microsoft Windows 98 Standard Edition

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This article was previously published under Q216840



Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SUMMARY
This article describes how to determine if Active Desktop is installed and if it is being displayed as a Web page. This information can be used if you are trying to programmatically determine if Active Desktop is installed on a computer. This information can be especially useful in some software rollout situations.



MORE INFORMATION
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

Determining If Active Desktop Is Installed
To determine if Active Desktop is installed on your Windows 95-based computer, view the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\ {AEB6717E-7E19-11d0-97EE-00C04FD91972}\InProcserver32

If the default value is Shell32.dll, Active Desktop is installed. If the default value is Url.dll, Active Desktop is not installed.

Windows 95 and Windows 98
To determine if Active Desktop is being displayed as a Web page, view the following registry key:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer

Active Desktop is being displayed as a Web page if the ShellState value contains the following data value (in hexadecimal):   1c,00,00,00,63,08,00,00,00,00,00,00,00,00,00,00,00,00,00,00,01,00, 00,00,0a,00,00,00 Active Desktop is not being displayed as a Web page if the ShellState value contains the following data value (in hexadecimal):   1c,00,00,00,23,08,00,00,00,00,00,00,00,00,00,00,00,00,00,00,01,00,00, 00,0a,00,00,00

Windows NT 4.0
To determine if Active Desktop is being displayed as a Web page, view the following registry key:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer

Active Desktop is being displayed as a Web page if the ShellState value contains the following data value (in hexadecimal):   1c,00,00,00,13,08,00,00,00,00,00,00,00,00,00,00,00,00,00,00,01,00,00, 00,0a,00,00,00 Active Desktop is not being displayed as a Web page if the ShellState value contains the following data value (in hexadecimal):   1c,00,00,00,53,08,00,00,00,00,00,00,00,00,00,00,00,00,00,00,01,00,00, 00,0a,00,00,00

Alternate Method for Determining If Active Desktop Is Installed
Using Regedit, view the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{89820200-ECBD-11cf-8B85-00AA005B4340}

If the IsInstalled value is set to 1, Active Desktop is installed.

Keywords: kbhowto KB216840

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