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How to Determine if Active Desktop Is Installed

This article was previously published under Q216840
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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
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows

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.

Determining If Active Desktop Is Being Displayed as a Web Page

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.
Properties

Article ID: 216840 - Last Review: 12/05/2015 12:51:57 - Revision: 4.2

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 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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