Firefox Community Forum

The last few days I am unable to load websites that I regularly use. I get a cannot find error message. I have no clue what is going on. I turned off the vpn but that had no effect. This is really hindering my getting things done. Anyone with insight? I cleared the cash and cookies and all that, rebooted the browser as well as the desktop. Thanks

Hi, When I click on a link in ANY email, it says " Hmm. We’re having trouble finding that site. We can’t connect to the server at omxj86ebb.cc.rs6.net. If you entered the right address, you can:

   Try again later
   Check your network connection
   Check that Firefox has permission to access the web (you might be connected but behind a firewall)

I know I did something to make my computer more secure, but don't remember. Please help! THANK YOU!

Hi, all experienced peoples are here I got strange issue with firefox lately. my site sometimes https://avsogirl.net/ not loads at all, just shows “server not found” look at the image.

i first thought maybe server down, but i checked with curl and ping, server responds fine. also tested same site in chrome and edge, loads normal there, no error. i tried clearing cache, disabling addons, even fresh profile. still same. only firefox gives this dns error.

i use dns-over-https in firefox, and i also have proxy config for work. maybe firefox handling dns/proxy different? when i switch off doh, sometimes page loads, sometimes not. so looks like firefox network stack problem, not site issue. anyone else facing same error?

seit einigen Updatesversucht das System verschiedene Webseiten ohne Erfolg zu öffnen. Es erscheint keine Fehlermeldung, auch kein Abbruch wegen Zeitüberschreitung oder der Hinweis, dass der Server nicht erreichbar ist.

HTTPS pages are no longer loading. Everything works fine in Microsoft Edge. I've reinstalled Firefox several times – the problem persists. Thank you very much for your help.

every time i launch Firefox, I get the banner prompting me to log in to network so i can access to the internet, i don´t understand it , cos I see that I am both logged in and connected to the net ?

I get a message that says I must log into this network before I can access the internet then I get another message that says the page isn't direct redirecting properly Firefox has detected that the server is redirecting the request for this address in a way that will never be complete the problem can sometimes be solved back calls by disabling or refusing to accept cookies. I have done neither. don't understand what happened I was browsing and all of the sudden I'm not I guess I may have to switch my browser?

After the most recent upgrades (both MacOS to 26.4 beta and Firefox 147.0.4), Firefox is giving me this message: Hmm. We’re having trouble finding that site. Any suggestions?

On a dual-stack network, with Windows tcpip6 ‘disabledcomponents’ parameter set to prefer IPv6, Firefox ignores this setting whenever an endpoint resolves both an IPv4 and a NAT64 address.

While monitoring traffic captured while connecting to sites in Firefox, if the initial DNS request for the site comes back with an IPv6 address only, the connection attempts from client’s IPv6 address to destination IPv6. If DNS answers come back with IPv4 and IPv6, the connection attempts IPv6 to IPv6. If DNS answers come back with IPv4 and a NAT64 address, Firefox doesn’t even attempt to connect to the NAT64 address, it immediately defaults to IPv4. I’ve tried disabling the IPv4 fallback setting which doesn’t change the behavior.

We’re running version 140.8.0esr. Is this behavior intended for Firefox? Is there a way to configure Firefox so it doesn’t ignore NAT64 addresses in dual-stack environments? The only way I found to force this was to completely disable the IPv4 stack on the client system’s NIC.

There are times when i am using Firefox that my PC will randomly disconnect from the internet. Sometimes it will reconnect on its own after I close Firefox. Other times I either have to restart my PC or go into Network & Internet settings and connect to my network. I am still running Window 10, free updates. Does anyone know what is causing this? It does not happen with any other browsers.

I open up firefox and the message appears - you must be signed into this network in order to access the internet. BUT i can use the internet. This is not a problem on a W10 machine which I also use.