When I close fiddler, I can access to outlook; while using fiddler, I fail to visit it with the error message below:

UTC Date: isn't important
Client Id: isn't important
Session Id: isn't important
Client Version: 20230310007.15
BootResult: cdnError
Failed resource: https://res-geo.cdn.office.net/owamail/20230310007.15/scripts/../resources/locale/zh-hans/owa.MailBoot.json
Back Filled Errors: Unhandled Rejection: Error: Failed to load localized strings:undefined|Unhandled Rejection: Error: Failed to load localized strings:undefined|undefined:undefined|undefined:undefined
err: Error: Failed to load localized strings
esrc: InitLoc
et: ClientError
estack: c@https://outlook.live.com/mail/0/?bO=2&sessionId=isn't important
a/a<@https://outlook.live.com/mail/0/?bO=2&sessionId=isn't important

I'm trying to use fiddler v4.4.8.4 in my ubuntu 14.04 virtual machine to capture https connections, and I get "secure connection failed". Of course, when I close fiddler or don't check cature https connects, firefox works well.

I've done operations below:

1. Export root certificate to desktop, update proxy settings in firefox, import and trust fiddler certificate in firefox.

2. In firefox about:config, set:

• security.tls.version.max=3
• security.ssl.enable_ocsp_stapling=false

3. I've used openssl to recreate a crt ver. certificate, added it into /usr/share/ca-certificates/mozilla, and reconfigured it.

Does anybody know how to solve this problem?

If I plug my laptop into my iMac to use the screen, the network adapter switches to  'Thunderbolt Bridge' and I stop capturing HTTP traffic.

Is it possible to configure Fiddler to always use 'Wi Fi' (which does capture HTTP traffic), so when I plug my laptop in, Fiddler continues to see traffic on the laptops internet connection?

(I created the shell file you suggested in your article 'Troubleshooting macOS Proxy Settings and Network Access' to determine the network adapter)

HTTP/1.1 502 Fiddler - Connection Failed

http://static.cdninstagram.com:443

showing http? and port 443 this is normal?

it works but some subqueries don't work

Hello! My name is Igor.

I have a question. In my case I have "Live Traffic (Paused)" instead of "Capturing".  I cannot track my traffic if I open browser (chrome) on my own. There is no any tracking. I can track it only if I open browser by clicking "Open browser" button inside Fiddler. How I can resolve it? What settings should I enabled or disable in my browser and maybe some system settings?
Os: MacOs Catalina 10.15.7

Fiddler 4.1.2

Chrome  110.0.5481.177 (There is no VPN)

Should I put some value to system proxy? 

Android version 12 updated? OS was sent to compromised SD card... Core 4.1 not in Web settings? just showing under about phone? Apps use all permissions. Not updated compromised any help if possible with this device. No settings, just accessories. Please anything to block hacking open really need help until can use computer to root or buy new. Trial possible? No Bixby running, there? Knox there not running 20 apps running microphone,  Camera cannot stop anything.. since update from Samsung??? Afraid to use SD to update last OS... 

Hey,

so I followed the Guides so far, Installed the Cert to my IOS Device (as user Profile and trusted it)

However, every URL I open in the Browser nor App tells me:

ERR_SSL_VERSION_OR_CIPER_MISSMATCH.

Is there any step I missed? 

Hi,

is it possible to start/open a new fiddler window so that the capturing is turned off? I am mostly investigating already captured logs and all the time I need first to turn off logging and then delete captured logs. first then I can import saved session.

I am looking for some parameters like fiddler.exe /captureoff or similar.

thx