How to Determine Your Previous Version of Internet Explorer

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Article ID: 165871
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Summary

This article describes how to determine your previous version of Internet Explorer after installing Internet Explorer.

More information

To determine your previous version of Internet Explorer, use the appropriate method:

Internet Explorer 5 Installed

To determine your previous version of Internet Explorer after installing Internet Explorer 5, view the PreviousIESysFile value under the following registry key:
Hkey_Local_Machine\Software\Microsoft\IE Setup\Setup
   Value         Version
   ---------------------
   4.70.0.1155   3.0
   4.70.0.1158   3.0
   4.70.0.1215   3.01
   4.70.0.1300   3.02
   4.72.3110.3   Windows 98 Internet Explorer
				

Internet Explorer 4.x Installed

To determine your previous version of Internet Explorer after installing Internet Explorer 4.x, view the PreviousIESysFile value under the following registry key:
Hkey_Local_Machine\Software\Microsoft\IE4\Setup
The following table lists the possible values for the PreviousIESysFile registry value and the version of Internet Explorer that corresponds to each:
   Value         Version
   ---------------------
   4.70.0.1155   3.0
   4.70.0.1158   3.0
   4.70.0.1215   3.01
   4.70.0.1300   3.02
				
NOTE: The Internet Explorer 4.0 Uninstall feature is designed to return you to a pre-Internet Explorer 4.0 browser. As a result, the PreviousIESysFile value cannot be used to determine if you upgraded a version of Internet Explorer 4.0 over an earlier Beta version of Internet Explorer 4.0 (even if you did not uninstall the earlier version).

The PreviousIESysFile value is primarily used by the Internet Explorer 4.0 uninstall program to determine which components should be removed when you remove Internet Explorer 4.0. The registry contains a RequiredIESysFile value for each component. If the RequiredIESysFile value for a particular component is equal to or less than the PreviousIESysFile value, the component is not removed when you remove Internet Explorer 4.0. If the RequiredIESysFile value for a component is greater than the PreviousIESysFile value, the component is removed when you remove Internet Explorer 4.0.

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Article ID: 165871 - Last Review: June 22, 2014 - Revision: 7.0
Keywords: 
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