I am having this issue on Mac with latest version of Fiddler Everywhere as at Sept 25th 2022. On one of our subnets, Fiddler can sign-in. On the others which require all web access to be via the proxy, can't sign-in making the app useless. Is there nothing I can configure externally to the app to make the account login part use the proxy?

This item is marked as completed, in which release is it fixed? I just installed v2.1.1, still encountered network error and don't know where to configure proxy during first time login.

Thanks Nick,

I'm looking for documentation for this - I have the same problem.

 

Fiddler everywhere is not picking up my browser settings and I don't know what to put into the electron-settings.json file in order to get it to use a proxy.

I tried the "new version 11.0" link below and I've been trawling your documentation but no sign of a solution.

 

I have internet access, but we use a proxy.  I cannot get to the settings page on Fiddler everywhere because it is requiring me to login first and fails there.  I can log into Telerik using the internet browser.  

 

 

Hello Nick Iliev

I am also having the same issue. Fiddler not using system proxy settings. Maybe there is a list of servers where he is trying to connect? We can allow in corporate network connect to list server withou proxy. We see that he is trying to connect to server-54-230-237-114.ccu50.r.cloudfront.net; ec2-54-208-67-108.compute-1.amazonaws.com 

but i think they can change?

Sure. The details are - and I guess pretty much the same for any corporate network setup - that I'm behind a proxied connection. Without going through the corporate proxy you have zero access to the outside (DMZ) - only internal network IPs are allowed. End of story basically.

Fiddler needs to submit a user login in the very first step before it is possible to access the settings menu. This is not possible.

Unfortunately Fiddler apparently does not use the system proxy on default, because it goes straight to the "Network error" notification when I click the "Login" button. The problem would presumably be very easy to fix, by allowing the users to edit the fiddler settings - e.g. a limited set of settings such as system / manual proxy configuration - or - to allow some startup parameters to be provided thus setting the proxy up for Fiddler to use in this way.

If I try to start fiddler up with a non-proxied connection it works fine, as expected. I'm able to get into the settings menu and change the proxy configuration, albeit making the "network error" show up again, as the corporate proxy is of course not present from e.g. my mobiles hotspot wifi conn... So I can't save the settings :-/ ... At least, they are back to default when I switch back to the secured corporate proxy network....

Please fix this :-)

Thanks

Could you guys provide more details on the specifics used in your corporate network - for example do you have direct access to internet (which is requirement for Fiddler Everywhere) or are you using some 3rd party security tools/firewalls?

My corporate network doesn't allow any direct internet access from end-user workstations. Instead, workstations are required to use an explicit (internal) proxy for all internet-destined HTTP and HTTPS transactions. Because of this Fiddler Everywhere will not launch since it insists on talking directly to some websites during startup. If it could be configured to use a proxy prior to startup (like by way of a HTTP_PROXY or HTTPS_PROXY env var) then that would at least allow the application to launch.

 

I am also having the same issue.  I could use the old Fiddler tool, but I cannot use Fiddler Everywhere.

 

 

 

Same problem here. Behind corporate proxy, and I'm unable to start fiddler (get past the login startup form).

This item is not Completed. That doc page for manually setting a proxy doesn't address this problem because it requires Fiddler Everywhere to already be up and running. How does anyone behind a no-direct-internet-access firewall actually launch Fiddler Everywhere prior to telling it to use an explicit proxy? It just hangs for me because it wants to talk directly to some internet resources (for updates and/or to force me to login ugh!). Even before the login page pops up I see hung TCP connection attempts which show up as SYN-SENT state sockets in netstat output. How do I tell Fiddler Everywhere to use a proxy even before it starts?

To reproduce this issue, try to launch Fiddler Everywhere behind a firewall that doesn't allow direct internet access and requires proxying.