Fiddler does not launch on Win 8.1

9 posts, 0 answers
  1. Jürgen
    Jürgen avatar
    6 posts
    Member since:
    Aug 2014

    Posted 16 Aug 2014 Link to this post

    On my Windows 8.1 Fiddler 4 (most recent version) only shows the splash screen and onle occasionally the warning dialog about Windows 8 when launching. After that it just crashes without any error message. I did not find any information about that in the event log.

    How could I find out what the cause could be?
  2. Jürgen
    Jürgen avatar
    6 posts
    Member since:
    Aug 2014

    Posted 16 Aug 2014 in reply to Jürgen Link to this post

    Found the reason: I have Password Safe 7 installed. Fiddler just starts fine if Password Safe is not running but crashes if Password Safe is running. Still don't know what the real cause is (could I somehow solve this issue?).
  3. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 18 Aug 2014 Link to this post

    Hi, Jurgen--

    I'd talk to the folks behind "Password Safe 7" to determine where their bug lies. Unfortunately, there appear to be many different products called "Password Safe" so I can't try it out myself.

    Regards,
    Eric Lawrence
    Telerik
     

    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.

     
  4. Jürgen
    Jürgen avatar
    6 posts
    Member since:
    Aug 2014

    Posted 18 Aug 2014 in reply to Eric Lawrence Link to this post

    Thanks for the reply, Eric. It's this Password Safe: http://www.passwordsafe.de/en/products/private-user/standard-edition.html.
  5. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 18 Aug 2014 Link to this post

    Hi, Jurgen--

    That product contains the following very questionable code:

       while (true)
       {
         foreach (window in System) {
             if (window.title == "Fiddler HTTP Debugger") Process.Kill(window.owner);
         }
       }

    You may wish to consider whether a product so careless is something you want to use.

    Regards,
    Eric Lawrence
    Telerik
     

    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.

     
  6. Jürgen
    Jürgen avatar
    6 posts
    Member since:
    Aug 2014

    Posted 19 Aug 2014 in reply to Eric Lawrence Link to this post

    Thanks, Erik.

    That code ist just unbelievable (I am a programmer myself). I will contact them about that.
  7. Jürgen
    Jürgen avatar
    6 posts
    Member since:
    Aug 2014

    Posted 19 Aug 2014 Link to this post

    By the way: How did you decompile the code?
  8. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 20 Aug 2014 Link to this post

    That's just pseudo-code. If you try to use notepad to save a file with the word "Debugger" in the title, you'll see that they kill notepad.

    I've filed a support ticket in their system, but it's not clear that they'll respond to it.

    Regards,
    Eric Lawrence
    Telerik
     

    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.

     
  9. Jürgen
    Jürgen avatar
    6 posts
    Member since:
    Aug 2014

    Posted 22 Aug 2014 in reply to Eric Lawrence Link to this post

    Thanks for the update, Eric. Tried the Notepad test myself. Unbelievable. I sent them a quite angry e-mail about that.
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