Firefox Community Forum

Hey,

after looking through many Forums and solutions on the internet, nothing can resolve my issue, so i hope this one can help. I just switched to Firefox and have the reaccuring problem, that i cannot load sites, that are located in my local network (e.g. homeassistant.local; 192.168.8.265:2283).

I always get a "server not found" error from firefox and the certificate information, that i am communicating through an unsecured connection (haha, yes good joke firefox. I know my local services do not all have an SSL certificate.) I already tried altering settings for Proxy, DNS over https, MACos Safety settings but nothing helps. I am jsut looking for that one "trust this domain" button, that i get on 'ALL OTHER BROWSERS like Chrome, Safari and Edge...

P.S.: All the services are up and running and i can reach them through any other Browser.

While I tried to connect to the web page "http://eprison.nic.in/npip/public/MyVisitRegistration", I found a reply saying "Firefox can’t connect to the server at eprison.nic.in". Thus, is there any way that I can possibly connect to the web page because I want to pay a VC visit from a distance to my son arrested in Mumbai Central Prison.

I use Firefox as my default browser. When I click on a link in my apple mail it doesn't appear but when I right click to check the Firefox icon, it shows that a window should be open (call it mystery window). In the photo it's the "Settings". I cannot seem to access it. (It used to be that if I clicked it, it would open.) If I right click the icon I can open a new Firefox window but the one I originally tried to open still does not appear. That's how I opened this page. If I've opened a new window and I right click and select "Show all Windows" I can see the original window but I still cannot access it. I've tried quitting Firefox and shutting down my computer but when I restart my computer the Firefox icon still shows that the mystery window should be open. Still cannot access it.

This is a fairly new problem that started sometime in the last few months. i have an Apple computer.

Каждый раз при попытке найти что-либо в интернете, выходит ошибка (фото прикрепил), очищал DNS и подключался к другому WIFI - браузер не работает. Помогите пожалуйста

Mozilla Firefox desktop : As at evening of 22nd May 2026, UK time, Firefox will not interface to Aol email. Gives " We can’t connect to the server at mail.aol.com ". Connection was fine earlier today, & as I know of no Mozilla changes, suspect this is a change at the AOL end. no longer permitting access to Firefox.  ?? Other browsers do connect, hence not an AOL outage.

I have noai.duckduckgo.com set as my default search engine. Almost always (but not quite every time) when I type anything into the address/search bar, I get a page with a "Server Not Found" error. (See attached image.) Refreshing the page immediately brings up the results without issue, but I consistently get the error first.

Oddly, if I go into settings and switch to a different search engine and then switch back to duckduckgo, the issue will briefly resolve and it'll work fine for a short while... and then I start getting the error again.

Is there any way to fix this?

I regularly and repeatedly get errors messages similar to the one below:

   Server Not Found

   Firefox can’t connect to the server at www.filepuma.com

   'What can you do about it?

   Try connecting on a different device. Check your modem or router. Disconnect and reconnect to Wi-Fi.

I can find no way to correct this. Can you help?

It's completely hopeless to get out at the Internet with Firefox, but no problems with my Macs own Safari. I have tried to add Firefox to the firewall as said in the Help-section, but i dosn't work. I am not good at computers. I have three Macs: One Mini with Tahoe 26.5.1; an old MacBook Pro with Catalina 10.15.7 and a MacBook Pro with Sonoma 8.14.3. I use a router connected via fiber.

Issues with redirect. A group I am a member of uses Constant Contact. An email is sent with a link to a report. Receive this error:

Server Not Found

Firefox can’t connect to the server at deuaxb4ab.cc.rs6.net. What can you do about it?

This worked last week.

Firefox 152.0.4. Win10

My hotspot is constantly disconnected by Firefox. I have the latest browser. And if this cant be sorted Ill have to go back to google. Its a nighmare. Firefox keeps giving me a wired connection

Without any change made on my part, effective May 18, have been denied access to the web. This even includes long time bookmarked important investing/banking, etc. Have checked macOS Privacy & Security settings but not aware of any blocking there. Has recent Firefox update changed things? I have not updated Firefox updates for some time.

I have the latest version 151.0.2 (64-bit), always update. It's terribly buggy now out of nowhere. Tabs won't connect to the internet after laptop wakes from sleep. All other browsers still do. If I close FF and reopen I lose ALL my tabs even though for decades I've had it set to reopen all tabs. What's up?

I was able to use Firefox web browser earlier today, but after trying to log in to Facebook, which failed, my account was no longer accessible, I saw an indication that my account was not connected. Do I need to update my software for Firefox. I've been having difficulties logging in to Facebook.

I have Mozilla VPN installed on my computer, but not in Firefox. Recently, whenever I turn the VPN on or off, the tab I have open in Firefox reloads. This usually doesn't matter, but sometimes it's really annoying, like when I'm really deep in an infinite scroll website. I want to turn it off, but I tried turning accessibility.blockautorefresh on in about:config, and it still does it. I don't want to blindly mess with settings when I don't know what they do. Does anyone know if there's a setting/group of settings I can use to stop Firefox from reloading on network change?