Hello,

I too am having issues with Fiddler, I've been using it for years as well and have downloaded the latest version (although the issue showed up earlier today in the previous version I had installed). I can't say when this started - other than most probably sometime in the last week, I tend to use Fiddler a lot but just noticed it today.

The symptoms are as follows...

If I turn capture on, all HTTP requests fail. If I try in Chrome, I can view more error details and see ERR_CONNECTION_RESET at the bottom of the screen. 

I have "Use Filters" unchecked.
I have clicked "Troubleshoot Filters" but my requests are not showing up in Fiddler.
I have tried both http://localhost:8888 and http://ipv4.fiddler:8888 when Fiddler is capturing and I receive nothing in Fiddler, and an ERR_CONNECTION_RESET message when I drill down into the error shown by Chrome.
I have checked proxy information, it is being set to 127.0.0.1:8888 as expected for both Http and Https when capturing. When not capturing the details in WinInet are blank (no proxy server).
I usually see a raft of logs when I have Fiddler enabled from my Win8 apps, now it's all completely clear - which leads me to believe that it's a system wide issue. I've reset the Win8 config but that made no difference.
I have tried Chrome, IE and FF but all exhibit the same behaviour.
The version I am running is v4.4.8.4, 10th June 2014.
Looking at my Firewall (Windows Firewall only) I see "FiddlerProxy" enabled with both Private and Public checked.
When running a new instance I see the following in the log...

14:24:45:8803 Fiddler Running...
14:24:45:9143 Windows 8+ AppContainer isolation feature detected.

I am on Windows 8.1.

Any suggestions you have will be greatly appreciated!

Cheers,

Morgan

I'd like to see GET arguments of a URL, not in the URL itself but parsed. Does Fiddler show those?

Hi all,

It is possible to automatically filter traffic and then save the matches packets with fiddler?
For example if I have an attachment to a mail I want to save the packet where the file is uploaded and then based on an in-house application open the attached file and search in it for data leakage.

Thanks,
Adrian.

As of the beginning of June, we've started seeing a spike in the certificate-related issues out in the field for our production app.  This spike has caused an 8-fold increase in the number of certificate-related tickets we see - we've been unable to reproduce these issues in house, and examination of our customers' machines has showed that their Personal certificate store appears to be corrupted.  When we installed Fiddler .NET4 on their machines for debugging purposes and attempted to enable HTTPS traffic, we saw the attached "Creation of the interception certificate failed" - Googling this error yielded one possible solution of renaming or deleting the folder under C:\Users\[username]\AppData\Roaming\Microsoft\Crypto\RSA, and another solution of installing the FiddlerCert addon.

At this point, we believe either a recent Windows Update or potentially even new malware is responsible for this spike.  We wanted to see if the folks in the Fiddler community have also experienced a recent spike in this issue, and if so, then are there any other ways to resolve the issue on a machine once it appears?

Hi guys,

I'm using FiddlerCore with VB.Net as I have to manipulate some pages in my company.
The problem is its acting weird with the HTTPS and most of the images in the webpages doesn't load.

Here you have the code I'm using right now:

http://pastebin.com/cFQ7XJA1

Here you have a screenshot of the error:

http://prntscr.com/3um4jv

I don't know why this happens as I have the certificate in the trustable:

http://prntscr.com/3um4tm

What am I doing wrong?
Thanks for the help.

Add timeline(Overall Elapsed) into customize columns ,  I need to sort the timeline .  The purpose is I want to know which URL , which API are very slow.    So I can improve the URL performance.  
        The Overall Elapsed  already in the tab "Statistics" per URL.    Well  I need to add this data into right table to sort.



Thanks

Hi,
I installed Fiddler on my PC to debug a communication issue between my PC running an ordering application through IE8 (same issue with IE11) and an external catalog application. The strange thing is that when Fiddler is installed, the application is working correctly. On PC's where Fiddler is not installed, we get error messages. As soon as we install Fiddler, the application works perfectly.
​The issue manifests itself with the user not obtaining an automated logon to the web site via the OCI 4 interface when using the standard IE8 browser settings. When Fiddler is installed, the issue disappears.
Any idea what behavior Fiddler could change to make this working?
Thanks in advance for your support.
Peter

First ,I want to say that fiddler is a reallllllly useful tool !

However, I have been disturbed for a long time about this problem. So here is the problem.

 
Step 1.

I received a response from server like this   (some useless headers have been omitted) :
 

HTTP/1.1 200 OK
Server: GewaServer3
Content-Type: text/html;charset=UTF-8
Content-Length: 48

var data = {"retval":"145918761","success":true}

 

Step 2.

After receiving the previous response, I hope fiddler could automatically send the request like this:
 

POST http://www.gewa.com/ajax/trade/save.xhtml HTTP/1.1
Host: www.gewa.com
Connection: keep-alive
Cookie: bdshare_firstime=1385011581672;
 
code=1321&Id=145918761&type=1556
 


But  I hope this part in request body 

(Id=145918761)

will be automatically changed according to the response body I received before 

("retval":"145918761")

 
I try to find a way to solve the problem for many days but I couldn’t.

If anyone could help I would be soooooo grateful!

Thanks again!
 

 

 

 

when I open the fiddler does not appear any link, even if I open a page in my browser, help me what do I do?

Hi,

I have been searching everywhere on the net and have found this link for an inspector for WCF RIA calls. http://blog.functionalfun.net/2009/11/fiddler-plug-in-for-inspecting-wcf.html

But it is no longer available for download at the MSDN Code Gallery URL linked in the article.

Does anyone know where I can download this plugin or is there a different way to decode WCF RIA services using Fiddler?

-Tim