I have fiddler v5.0.20173.50948 

I was recently migrated at work to Outlook 2016 (version 16.0.9001.2080) and an Office 365 mailbox.

When fiddler is active and capturing traffic, I will periodically (approximately every half hour or so) have Outlook attempt authentication, only to pop a dialog that says

    "You'll need the internet for this"

with an error code of 0xCAA70004

 

and outlook will no longer function, unless I turn off fiddler capture & restart Outlook.

 

I am capturing and decrypting HTTPS traffic, but only for the hosts related to my work as a developer. I tried to relax filters to see all HTTPS traffic and I don't see where fiddler is getting in the way of Outlook.

 

I have tried disabling IPv6 (tools / options / general), and the steps on http://toenailclippings.idealworld.net/2016/10/we-are-unable-to-connect-right-now/

 

Neither have worked. Thanks for the help.

So I just installed fiddler on my PC and I'm not able to capture any traffic. I had it installed some time ago and it was working just fine. What I've tried:

-If I click help-> troubleshoot, these 4 requests will be added to fiddler : http://prntscr.com/kn56hh . But It still doesnt capture anything if I acces a website

-If I navigate to  http://ipv4.fiddler:8888/, fiddler doesnt show any new capture (also the website returns the error "this site cant be reached")

-If I navigate to http://localhost:8888/, fiddler is able to capture the request http://prntscr.com/kn57g2

-My proxy settings are ok (they are set to 127.0.0.1:8888    http://prntscr.com/kn57v5)

-I'm using chrome to do all these tests. I've tried other browsers and they dont work either

-I have Decrypt HTTPS traffic enabled. I also tried pressing actions -> trust root certificate

Hi,

 

I've set everything up as per the Telerik guides but Fiddler is still not decrypting the traffic on any of the browsers I tested: IE, Firefox, Chrome.

 

Here is what I have done:

 

- Launched Fiddler as admin

- Added Fiddler root cert to Windows Cert store and Firefox's own managed cert store

- Activated the HTTPS decryption in the Fiddler options

- Verified that browser proxy is configured to localhost:8888

 

I'm running Fiddler on Windows Server 2012 R2

 

Thanks

 

 

Starting yesterday, Fiddler has begun automatically closing when I attempt to save "All Sessions" - it then reopens, with none of the sessions previously captured. I attempted to close and reopen, and then attempted a clean install. I'm continuing to have these issues. Anyone else have ideas about what might be doing this?

I have been looking online for multiple hours now and none of the other forum threads have worked. When I have fiddler open with https decryption enabled, and the certificate trusted, it makes my internet stop working and does not decrypt anything. I have resetted the certificate and tried to uninstall, but fiddler does not show up in the installed program list. How do I uninstall fiddler or get my https decryption working?

Hello

Thank you for making this awesome piece of software. I have used it many times before, and this is the first time where I actually can't get Fiddler to record any HTTPS traffic from league of legends.

 

What i want: Record all HTTPS requests that are getting sent by League of legends to their servers, using the League of Legends client. (The client is the only place where you can actually see the information that i need).

What does not work: I am quite sure that League of Legends does NOT use windows default proxy, and therefore does not get picked up by Fiddler. I am not quite sure if they use SSL-Pinning, I dont think they do - but i might be wrong. Each time I try to boot up League of legends I just see the HTTP tunnel without any HTTPS requests in between.

 

What i have tried:

- Tried forcing League of legends to use the proxy 127.0.0.1:8888 for it to go through fiddler. This is where I see only HTTP tunnels with instant connection closed. It also gave me the warning "Do you want to trust this certificate bla bla bla."

- Tried using ProxyCap and Your freedom to make rules to route all the data through fiddler using 127.0.0.1:8888.

- Tried to add an environment variable to my system settings called "all_proxy" with the value of 127.0.0.1:8888 to again make it go through fiddler.

 

I have attached two images, one showing my HTTP tunnels and one showing that I can receive HTTPS requests from other apps such as ShareX in this example.

Still no luck... What should I do in order to actually see the HTTPS Requests between the HTTP Tunnels? Thanks.

I'm just a game analyzer as my hobby. I check any Android games to see how it works and if game collect data or not

There is a problem with Fiddler 2 that i don't understand. It does not capture traffics from some games like it goes through Fiddler without Fiddler2 is seeing. No certificate, no any errors. game works fine without captured traffic

I have ensure that I have enabled proxy on Android system, have certificate installed, and check if https decryption is working. All fine. I have reseted cert and fiddler 2 but it doesn't help

All i got is traffic from ads.

Fiddler 2 does work with most of other online games. I just can't find out why Fiddler2 can't capture traffic of some game.

Can you please help me with this problem?

 

Here is screenshot of google.com https decryption: https://imgur.com/e9HtX5M

Here is screenshot of game that does not work with fiddler 2 but with just traffics from ads: https://imgur.com/YKghx9v

Here is screenshot of game with captured traffics https://imgur.com/8e1k4UL

 

 

I would like to have users in my company use Fiddler to record web interactions and then export them to Visual Studio webtests. Obviously, this would remove the necessity for many users to have licenses for Visual Studio Enterprise (not inexpensive).

However, my company's website has lots of dependent requests. Visual Studio Enterprise, for the most part, correctly recognizes dependent requests and groups them underneath their parent request after a recording is complete. Fiddler unfortunately does not.

At Sean Lumley's blog at https://blogs.msdn.microsoft.com/slumley/2007/04/17/writing-fiddler-web-test-plugins/ I can see an example for writing a Fiddler webtest-export plugin. I have created webtest plugins before, so this looks like a good option.

Are there any other things I need to know before starting out? Has a dependent request plugin already been written? Unfortunately, I'm not even aware of the algorithm Visual Studio uses for correctly sorting dependent requests.

Hello forum

We intend to use a data recovery software running under Windows which sends "telemetric data" back home (this is declared from the manufacturer). Of course we would like to know everything what this application does...

In the Fiddler docs, different setups are described (e.g. capture traffic from another machine, decrypt traffic from a hostname only)



Question:

What is a good approch to find out, how this application does encrypt it's telemetric data and what kind of "transport-encryption" it does use
(in order to be able to setup a working Fiddler environment)?



Thank you very much for any feedback!

Joe



PS:
I don't want to mention the name of the application in question, in order to prevent the manufacturer to circumvent our efforts :-)

hi whats the code for c# and fiddlercore to have unmatched requests passthrough like in regular fiddler ?

 

cheers