NullReferenceException in Session.cs_line 4353

[Frank]

Hello Support,

I have a problem with Fiddler v4.6.3.44034 while recording a session against a https-Server.

The following exception is recorded in the log:

23:00:10:3693 Automatic authentication of Session #659 was unsuccessful. System.NullReferenceException Object reference not set to an instance of an object.
   at Fiddler.Session.ž() in c:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\Session.cs:line 4353

The corresponding request is returing a 502 with the following response text:

[Fiddler] The connection to the upstream proxy/gateway failed. Closing Fiddler,
changing your system proxy settings, and restarting Fiddler may help.
System.Exception Upstream Gateway refused requested CONNECT. 407

 

Trying QuickExec  prefs set fiddler.composer.HTTPSProxyBasicCreds username:password does not help.

 

Do you know a solution for this issue?

Thanks 

Frank

[Tsviatko Yovtchev]

Hello,

That's a weird one. Could you try doing this in FiddlerScript OnBeforeRequest:

oSession["x-AutoAuth"] = "(default)"

Regards,
Tsviatko Yovtchev
Telerik by Progress