Error message when installing fiddler

2 posts, 0 answers
  1. ron
    ron avatar
    1 posts
    Member since:
    Nov 2014

    Posted 07 Nov 2014 Link to this post


  2. Eric Lawrence
    Eric Lawrence avatar
    832 posts

    Posted 07 Nov 2014 Link to this post

    The error message here is usually a sign that you are running a 3rd party firewall or security software and it is blocking Fiddler's ability to listen on its default port.

    If you are not running a firewall that you can configure, you might try moving Fiddler to a different port (Tools > Fiddler Options > Connections) and also ensuring that you have the latest updates for .NET and Windows installed from Windows Update.


    Eric Lawrence

    Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.

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