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Internet Explorer Does Not Start

Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
When you attempt to start Internet Explorer, the mouse pointer may changeto the Working In Background or Busy pointer and then back to the normalpointer, but Internet Explorer may not start.
The EnforceShellExtensionSecurity registry option has been set and InternetExplorer does not register itself as an approved shell extension in theregistry.
To resolve this issue, create a file named Enabie3.reg that contains thefollowing four lines:
   REGEDIT4   [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell   Extensions\Approved]   "{5E6AB780-7743-11CF-A12B-00AA004AE837}"="Microsoft Internet Toolbar"   "{3DC7A020-0ACD-11CF-A9BB-00AA004AE837}"="The Internet"				
After you create and save this file, double-click it in Windows NTExplorer. A message will appear stating that the information in theEnabie3.reg file has been entered into the registry.
Microsoft is researching this problem and will post new information herein the Microsoft Knowledge Base as it becomes available.
More information
To restrict which shell extensions can be run on a Windows NT server orworkstation, you can add "EnforceShellExtensionSecurity=0x1" to thefollowing registry key using a policy or Registry Editor:
However, Internet Explorer does not resister itself in the following key
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved
and as a result is unable to run.
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Article ID: 166465 - Last Review: 06/22/2014 18:17:00 - Revision: 5.0

  • kbenv KB166465