Hi, 

I'm very new to fiddler and trying to understand how i can use it to identify the authentication being passed/used to login to a website?

The end goal would be to use something like PowerShell to automate logging into a site and perhaps posting a message or downloading a file, but i'm struggling to understand how can capture the details?

I have followed some guides for how to use powershell to login facebook, but this ins't the same for every site. Some allow the creds to be passed in the header, or JSON body, some pass using a form action. So how can i use fiddler to identify which method i need to use?

Hope this makes sense?

Thanks

I have three fiddler instances running one is base instance running on 7777 port and second is viewer running on 8888 and third instance is a viewer running on 9999 port. When i want to clear the sessions from the fiddler i am using Execaction.exe dailydump (code below) to delete the sessions. But on using this i am able to clear the session of last viewer that i have opened and the sessions in second and first instances remains to be uncleared.

So the question is using execaction.exe how can we point to particular instance of fiddler in this scenario second instance that is running as viewer and first instance that is base instance. So how can we point and execute the execaction.exe to particular instance of fiddler.

Please looking for some support and help here.

Dailydump code:
case “dailydump”:
FiddlerObject.UI.actSelectAll();
if(FiddlerObject.UI.lvSessions.SelectedItems.Count > 0){
FiddlerObject.UI.actSaveSessionsToZip(String.Format(“C:\\temp\\{0:yyyy-MM-dd_HHmmss}.saz”,DateTime.UtcNow));
FiddlerObject.UI.actRemoveAllSessions();
}

i somehow can´t reach the objects in a nested json. I easily can reach the element test, but how to reach this_month inside "stats"? this is my json:

I want to highlight the URL when the URI contains specific word at the time of loading/importing files (saz/har/etc).

I found note which says we can do this using "OnBeforeResponse" and "OnBeforeRequest" but those are while capturing session.

if (oSession.uriContains("com")) {
oSession["ui-backcolor"] = "blue";
oSession["ui-color"] = "#D3D3D3";
oSession["ui-bold"]="QuickExec";
}

But my case is, when reviewing the already captured session, I want fiddler to highlight specific words in the URI.

Good day everyone. I hope that somebody help me with that question - I want  to know how I can to modify request headers and body when I Post some information by https connection.I will be very grateful if you’ll write step by step how to do it.

I'm trying to figure out the error that occurred in the MS Store after the OS version upgrade  v.1709 OS Build 16299.402 -> v.1803 OS Build 17134.1 2018.04.30.
As a result of this error, any applications from the Store stopped loading. 
Actually the Store itself works as an application.

I.e. the Store starts up like charm, shows my account, shows what applications there are new, what needs to be updated. But when I try to download any application, I receive the message "Pending", "Starting download", but after a few seconds it is reset, appears again and after three attempts "Error: See details", "Something Unexpected has happened. Code: 0x80070015", "Could not install We'll retry shortly." message is appears.

Store app itself offers to update itself from version 11803.1001.9.0 to 11807.1001.13.0, but when I click on the "Update" button as described above - the "Starting download" message is appears, but after a few seconds it is reset, appears again and after three attempts,  "Error: See details ", "Something Unexpected has happened. Code: 0x80070015 " and " Could not install. We'll retry shortly." messages is appears.

In order to deal with this error, I decided to use Fiddler. I run Fiddler, then I run the built-in utility EnableLoopback and mark the checkboxes for all Store applications. When I start Store, I can see the exchange between the Store and the Microsoft servers in Fiddler window. But when I press the "Update" button in the Store window, there is not any activity that is described above, i.e.  "Starting download", "Error: See details ", "Something Unexpected has happened. Code: 0x80070015" and "Could not install. We'll retry shortly."  messages do not appear. But in the Fiddler window I can see that the request goes to the server https://watson.telemetry.microsoft.com/Telemetry.Request, but it does not respond.

If I discard Capture (in the lower left corner of the Fiddler window), then activity  appears in the Store window, i.e.  "Starting download", "Error: See details", "Something Unexpected has happened. Code: 0x80070015" and " Could not install. We'll retry shortly." messages appears again. But then in Fiddler there is no interception of traffic respectively (since I looked away from Capturing).

Is this behavior normal or is it some kind of mistake?
What am I doing wrong? And how do I see where the error occurs when Store try s download application from MS server?
I made a movie of the whole process through the screen recorder. https://youtu.be/d4kKjWH9WDo  If anyone wants to - he can view  so that it becomes more clear about what it is.

TIA

fiddler can't capture any network traffic. There is only one session captured that it's a update test session about fiddler itself.

my os is Win10 latest(1703),  can anybody help me?