Fiddler Ideas

The free web debugging proxy for any browser, system or platform.

Insufficient Memory Address Space

After the latest update (v5.0.20181.13826) I keep getting out-of-memory exceptions. Sometimes it takes 10 minutes for it to happen, sometimes over an hour.

I just have Fidder running and I have these options checked: 


* Decrypt HTTPS traffic

* Ignore server certificate errors

This error was not happening before, only since the update.

  • Guest
  • Mar 20 2018
  • Under review
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  • Guest commented
    21 Mar, 2018 09:53pm

    Wow! Totally impressed thanks! Have downloaded the new version, will let you know if the problem persists.

    Thanks again :)

  • Simeon Georgiev commented
    21 Mar, 2018 12:49pm

    I confirm that the v5.0.20181.14850 is shipped and it solves the issue.

  • Eric Lawrence commented
    20 Mar, 2018 06:59pm

    The Telerik Developers report that they've fixed this (now compiling to allow 64bit) in the latest build. Not sure if it has shipped yet.

  • Eric Lawrence commented
    20 Mar, 2018 02:47am

    I've confirmed that the latest version of Fiddler is locked to 32bit, which causes this problem.

  • Eric Lawrence commented
    20 Mar, 2018 02:45am

    Are you running a 32bit version of Windows, or a 64bit version?

    In the past, Telerik has accidentally shipped a 32-bit only version of Fiddler; running out of contiguous address space is a very common problem on 32bit.