Error - Failed to register Fiddler as the system proxy

3 posts, 0 answers
  1. Giri
    Giri avatar
    2 posts
    Member since:
    Sep 2019

    Posted 11 Sep Link to this post

    When I try to run FiddleApplication.Startup(startupConfig)

    FiddlerCoreStartupSettings startupSettings = newFiddlerCoreStartupSettingsBuilder() .ListenOnPort(0) .RegisterAsSystemProxy() .DecryptSSL() .Build(); FiddlerApplication.Startup(startupSettings);

    In my log events I see:

    Starting FiddlerCore/4.6.20191.7809 ...
    ** LogString: !WARNING: The DefaultLAN Gateway information could not be obtained.
    ** NotifyUser: Error - Failed to register Fiddler as the system proxy.


    I'm running the process as administrator.

    Note: When I run the normal Fiddler UI application everything works fine. Even running an older FiddlerCore version (2.3) is able to register itself as the system proxy.


    P.S - I also see a warning in Visual Studio - "Please use Telerik.NetworkConnections.NetworkConnectionsManager to register the FiddlerCore Proxy as the system proxy." But I couldn't find any documentation/examples using NetworkConnectionsManager and I couldn't figure out how to use it.
    fiddlercore fiddler-dev
  2. Giri
    Giri avatar
    2 posts
    Member since:
    Sep 2019

    Posted 11 Sep in reply to Giri Link to this post

    I have asked the same questions on StackOverflow with better formatting : https://stackoverflow.com/questions/57870029/error-failed-to-register-fiddler-as-the-system-proxy
  3. Eric R | Technical Support Engineer
    Admin
    Eric R | Technical Support Engineer avatar
    230 posts

    Posted 12 Sep Link to this post

    Hi Giri,

    Unfortunately, the NetworkConnectionsManager is relatively new and the documentation isn't ready yet. Although, there is a pretty thorough explanation of how to use the Namespace at the How Do I Use Telerik NetworkConnections NetworkConnectionsManager forum thread.

    Please review the forum post and let me know if you need any additional information. Thank you for using the Fiddler Forums.

    Regards,


    Eric R | Technical Support Engineer
    Progress Telerik

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