Hi,

I've installed Fiddler Everywhere(1.6.0) about 2 weeks ago on my Windows 10 machine and it worked fine. Since about a week, I can't start it, if I open the exe file, nothing happens.

I tried reinstalling it, I've installed even 1.6.1, but I experience the same symptom.  Please find the latest entries from AppData\Roaming\Fiddler Everywhere\Logs\electron.log file:

[2021-06-01 15:10:07:470] [info] [Product information] Fiddler Everywhere 1.6.1
[2021-06-01 15:10:07:473] [info] [System information] win32 (Windows_NT/x64) - version 10.0.18363
[2021-06-01 15:10:07:514] [info] Initializing splash screen.
[2021-06-01 15:10:07:518] [info] Attempting to run server - 5 attempts left.
[2021-06-01 15:10:07:519] [info] Calculating the URL of ASP.NET Server application.
[2021-06-01 15:10:07:519] [info] Generating random port.
[2021-06-01 15:10:07:520] [info] Trying to start server at port [37538].
[2021-06-01 15:10:07:521] [info] Attempting to run server - 4 attempts left.
[2021-06-01 15:10:07:522] [info] Calculating the URL of ASP.NET Server application.
[2021-06-01 15:10:07:522] [info] Generating random port.
[2021-06-01 15:10:07:522] [info] Trying to start server at port [10761].
[2021-06-01 15:10:07:523] [info] Attempting to run server - 3 attempts left.
[2021-06-01 15:10:07:524] [info] Calculating the URL of ASP.NET Server application.
[2021-06-01 15:10:07:524] [info] Generating random port.
[2021-06-01 15:10:07:524] [info] Trying to start server at port [61944].
[2021-06-01 15:10:07:525] [info] Attempting to run server - 2 attempts left.
[2021-06-01 15:10:07:526] [info] Calculating the URL of ASP.NET Server application.
[2021-06-01 15:10:07:526] [info] Generating random port.
[2021-06-01 15:10:07:526] [info] Trying to start server at port [21829].
[2021-06-01 15:10:07:527] [info] Attempting to run server - 1 attempts left.
[2021-06-01 15:10:07:528] [info] Calculating the URL of ASP.NET Server application.
[2021-06-01 15:10:07:528] [info] Generating random port.
[2021-06-01 15:10:07:528] [info] Trying to start server at port [50452].
[2021-06-01 15:10:07:529] [error] Maximum number of attempts reached - quitting application.
[2021-06-01 15:10:07:530] [error] Unable to start the server, error is Maximum number of attempts reached - quitting application.

Hi,
we've encountered error in subject of this post continued by:

"0 - A certificate chain could not be built to a trusted root authority.

ISSUER: CN=GlobalSign RSA OV SSL CA 2018, O=GlobalSign nv-sa, C=BE

This warning can be disabled by clicking Tools -> Options."

This seems to be problem with local certificate store on client computer? Not neccessarily Fiddler issue.
Using Windows 7.
How do we proceed?

Hello Filip again, so im playing around with fiddler on League of legends and i get this error when i change some of the value, is there any fix>?

and one more question, so this is the league of legends shop

and now i lost the 6300 Blue essence is there anyway to bug or glitch the shop so it doesn't take any blue essence?

From Filip

Hi,

Is there a way to handle Modern Authentication with fiddlercore? 

Thanks,

Hi guys!

I love fiddler and it works great to debug my android apps! :-)

It works for me, if I enable the default android proxy settings. But I am searching for an option to use proxy authentication and an option to route only traffic of my specific app to the proxy.

My android settings don´t allow adding proxy authentication settings (missing username and password in the settings). So I tried about 10 different proxy apps, e.g. drony, postern, "proxy manager" and "PowerTunnel for Android"

But if I am using an app with the fiddler proxy the https connection fails. Can you describe why?

Or can anyone tell me an working android app to add proxy authentication? Additional an app which can only route the unique apps traffic (like drony).

I work in windows with the program that starts and controls the chrome-based browser.

Fiddler can display all the traffic from that browser, but I want to explore the commands that are sent to that browser to control it (for example open URL, make a post query, etc).

Fiddler doesn't display such commands.

But using ieinspector HttpAnalyzer I can see that the browser is controlled by the chrome devtools at localhost:54909 and websockets ws://localhost/devtools/page/HASH 

How can I explore all that information in fiddler?