Fiddler not working in Windows 7 - LAN Settings locked?

Posted by Glen Little on Super User See other posts from Super User or by Glen Little
Published on 2010-04-27T17:33:18Z Indexed on 2010/04/27 17:43 UTC
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windows-7

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fiddler

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group-policy

I've been using Fiddler for years, but now, on Windows 7 (64 bit) I cannot get it to monitor traffic from IE 8.

With the Firefox add-on, it is able to monitor Firefox traffic with no problem.

This is not related to monitoring HTTPS traffic, or traffic to localhost.

I've tried running IE and/or Fiddler with "Run as Administrator", but no luck.

The best clue to the problem that I have is that in IE8, the "Local Area Network (LAN) Settings" dialog accessed from "LAN Settings" in the Internet Options / Connections tab is all grayed out.

I have two Windows 7, 64 bit computers, both on the same LAN. One works fine, the other has these settings grayed out, and a note on the Connections tab: "Some settings are managed by your system administrator". However, the system administrator has NOT set any.

Any ideas?

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