Anyone else have problems with Google search when using Fiddler?

2 posts, 0 answers
  1. Rafe
    Rafe avatar
    9 posts
    Member since:
    Feb 2014

    Posted 17 Sep 2015 Link to this post

    So several times over the past two months I head over to to do my googling. All is going well until suddenly Google decides that I am a bot and throws a captcha screen in front of me instead of my search results. From then on it's no Google for me no matter how many captchas I enter and no matter which browser I use. I've pretty much just had to do my search via a different search engine, and wait it out until Master Google decides that I am worthy of its service again.

    Yesterday it happened again and it occurred to me that I was running Fiddler. After turning Fiddler off and waiting a bit I was able to use Google again. 

    Has anyone else experienced this?

  2. Eric Lawrence
    Eric Lawrence avatar
    833 posts

    Posted 18 Sep 2015 Link to this post

    Hi, Rafe--

    Who's your ISP and how are you connected to the Internet?

    You will see this if you used Fiddler to chain to TOR or some upstream shared proxy provider (some geo-located VPNs, for instance) because Google sees a lot of unrelated traffic coming from a single IP address and it freaks out.

    It's possible you could see this if you used Fiddler to modify requests in an unusual way (e.g. changing the user-agent string to something crazy or adding X-Forwarded-For headers and the like).

    Other than those two things, are no known cases where Fiddler would cause you to see this without making modifications.

    Eric Lawrence
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