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Network error at login form

Ubuntu 20.04 KDE, fiddler 1.1.1


After installation I can`t login, login form tell about network error.


No internet access and it seems you have a proxy set. Check if it is correct in your OS settings and restart the application after that.


Autorization from google account do-t work too(


I was able to log in by running the program with sudo, but --no-sanbox flag do`t allow to download certificate((


Other application works fine.


console output


5:35:30.185 › Loading application in window. 

15:35:30.186 › Getting the URL of Angular application. 

15:35:30.194 › Starting the app without a deep link. 

15:35:30.194 › Maximizing application window. 

15:35:30.852 › Destroying splash screen. 

15:35:31.013 › Checking for update 

15:35:31.123 › Error: Error: net::ERR_PROXY_CONNECTION_FAILED 

   at SimpleURLLoaderWrapper.<anonymous> (electron/js2c/browser_init.js:2519:21) 

   at SimpleURLLoaderWrapper.emit (events.js:210:5) 

From previous event: 

   at GenericProvider.getLatestVersion (/tmp/.mount_fiddleKOJzA0/resources/app/node_modules/ele

ctron-updater/src/providers/GenericProvider.ts:18:25) 

   at /tmp/.mount_fiddleKOJzA0/resources/app/node_modules/electron-updater/src/AppUpdater.ts:34

6:26 

   at Generator.next (<anonymous>) 

   at processImmediate (internal/timers.js:439:21) 

From previous event: 

   at AppImageUpdater.getUpdateInfoAndProvider (/tmp/.mount_fiddleKOJzA0/resources/app/node_mod

ules/electron-updater/src/AppUpdater.ts:335:43) 

   at /tmp/.mount_fiddleKOJzA0/resources/app/node_modules/electron-updater/src/AppUpdater.ts:36

2:31 

   at Generator.next (<anonymous>) 

From previous event: 

   at AppImageUpdater.doCheckForUpdates (/tmp/.mount_fiddleKOJzA0/resources/app/node_modules/el

ectron-updater/src/AppUpdater.ts:359:34) 

   at AppImageUpdater.checkForUpdates (/tmp/.mount_fiddleKOJzA0/resources/app/node_modules/elec

tron-updater/src/AppUpdater.ts:220:35) 

   at AutoUpdateService.<anonymous> (/tmp/.mount_fiddleKOJzA0/resources/app/out/services/auto-u

pdate/auto-update-service.js:77:74) 

   at Generator.next (<anonymous>) 

   at fulfilled (/tmp/.mount_fiddleKOJzA0/resources/app/out/services/auto-update/auto-update-se

rvice.js:4:58) 

15:35:31.123 › Error: net::ERR_PROXY_CONNECTION_FAILED


requests to 

https://login.getfiddler.com/

https://api.getfiddler.com/

https://auth.getfiddler.com/

urs from browser is working without errors


in system settings proxy is disabled


Thank you.

1 Comment

Make sure that you have administrative rights to run the client and to change the OS proxy settings. Fiddler Everywhere should be able to set the OS proxy settings when capturing automatically is started. Here is a screenshot of how your OS proxy settings look (when FE capturing mode is on ).


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