Fiddler downloaded an update this morning when i launched it, now it crashes out as soon as the application starts.

Once I open the application, the GUI briefly displays, and I'm hit with the normal windows 'Fiddler has stopped working' dialogue. Tried to uninstall / reinstall the application with no success.

Any suggestions?

 

For reference:

Fiddler.exe - 4.6.20171.7553

Windows 10 + .net 4.6.01586

 

I have fiddler 4.6.x latest, chrome 56 and windows 7 64 bit. I cannot make chrome accept the fiddler root certificate. I posted this issue on stack overflow with the same title. Please search it there and respond on SO or over here. I cannot post the same thing here because of your buggy spam filters. Thank you.

PS - I am on the fence about buying charles proxy. The answers to this post might help me come back to fiddler.

 

Can automatically authenticate option  be enabled or disabled via command line on windows?

I know it can be done via GUI, but is there any way, that option can be modified using any command line, or registry entry or file modifications?

First of all I'll say that I've investigated it deeply.

I used to have fiddler  4 , earlier versions and never updated.

When my computer turned to sleep , I was able to wake it by trying to rdp it.

The connection itself to rdp - woke the computer ( via network card) and the computer awoke ,and then I could connect to it.

this feature is called "wake on link".

After installing fiddler ( latest version) , suddenly my computer won't wake up from sleep when trying to connect to pc.

at first I didn't know what whet wrong and then I started uninstalling latest installed programs

When I uninstalled fiddler , it started waking  the computer

So I don't know what's you've done in the last version , but it f*s some other functionalities.

please fix it.

 

 

 

 

---------------------------
Awww, Fiddlesticks!
---------------------------
Fiddler has encountered an unexpected problem. If you believe this is a bug in Fiddler, please copy this message by hitting CTRL+C, and submit a bug report at http://www.telerik.com/forums/fiddler.

Value of 'null' is not valid for 'stream'.

Type: System.ArgumentException
Source: System.Drawing
   at System.Drawing.Image.FromStream(Stream stream, Boolean useEmbeddedColorManagement, Boolean validateImageData)

   at Fiddler.frmPrompt.GetUserString(IWin32Window wndOwner, String sTitle, String sPrompt, String sDefault, Boolean bReturnNullIfCancelled, PromptIcon piIcon) in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\frmPrompt.cs:line 84


Fiddler v4.6.3.50306 (x64 AMD64) [.NET 4.0.30319.42000 on Microsoft Windows NT 10.0.14393.0]
---------------------------
OK   
---------------------------

I made this post on Stack overflow (post title Making fiddler work with chrome). Posting it here also to get advice from fiddler itself. I am not copy pasting the contents of the post because your spam detector is not letting me post plain text.

http://stackoverflow.com/questions/41902367/making-fiddler-work-with-chrome

Please help.

I noticed that FiddlerCore dlls are not strongly named. Is there any version available which is signed with a strong name?

I tried to sign the assembly, but it seems to be protected.

Hi guys,

Since the performance testing tools have been made available to VS2015 I thought I'd try out the webtest/loadtests and found that fiddler can already export directly to that format. The following article talks about custom plugins you can make for the export process but my version of Fiddler doesn't seem to pick them up.

https://blogs.msdn.microsoft.com/slumley/2007/04/17/writing-fiddler-web-test-plugins/

Can anyone else get this working using the method described? For the examples purposes I took all logic out the plugin and still couldn't get it to display in the list of plugins. It does however lock the file when I open Fiddler? Does this feature still work?

Code below:

Fiddler v4.6.3

    using Fiddler.WebTesting;

    namespace FiddlerPlugin
    {
        public class FiddlerPluginTest : IFiddlerWebTestPlugin
        {
            public void PreWebTestSave(object sender, PreWebTestSaveEventArgs e)
            {
            //Test
            }
        }
    }

Hi,
we tried using “compose” tab in Fiddler for testing OPTIONS method.
But by using that we are getting same status for OPTION and GET method requests that is (200 OK), even though we have restricted OPTIONS methods from web.config.(Attached screenshot as Fiddler_response.png)

Just to confirm we used HttpRequester tool ,an AddOn in Firefox, we test and found difference between the GET and OPTIONS methods requests status. As we have restricted OPTIONS method, it was giving 404 for OPTION request and for GET it is giving 200 as response.(Attached screenshot as httprequester_response.png)
Please suggest how to test HTTP methods with fiddler, so that we can differentiate between the status for restricted and non-restricted HTTP methods.
Config changes and fiddler version are attached with this ticket

---------------------------
Awww, Fiddlesticks!
---------------------------
Fiddler has encountered an unexpected problem. If you believe this is a bug in Fiddler, please copy this message by hitting CTRL+C, and submit a bug report at http://www.telerik.com/forums/fiddler.
The wait completed due to an abandoned mutex.
Type: System.Threading.AbandonedMutexException
Source: mscorlib
   at System.Threading.WaitHandle.InternalWaitOne(SafeHandle waitableSafeHandle, Int64 millisecondsTimeout, Boolean hasThreadAffinity, Boolean exitContext)
   at System.Threading.WaitHandle.WaitOne(Int32 millisecondsTimeout, Boolean exitContext)
   at Fiddler.frmViewer.‹•(String[] ˆ•) in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Viewer.cs:line 2809
   at Fiddler.frmViewer.‡•(String[] ˆ•) in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Viewer.cs:line 2717

Fiddler v4.6.3.50306 (x64 AMD64) [.NET 4.0.30319.42000 on Microsoft Windows NT 10.0.14393.0]
---------------------------
OK  
---------------------------

 

What's odd is I don't have a c:\JenkinsHome directory.

 

-Eric