Firefox Community Forum

Hi, The browser suddenly closed, and I can't open it since then. I searched for what to do but couldn't find anything helpful. I tried reinstalling Firefox, but it still doesn't work. I don't know it is a helpful information, but the other browsers (like Chrome and Opera) also don't open.

Hello! I am an avid user of firefox (especially with adblockers) on a windows 11 PC. Unfortunately, I have recently been experiencing an issue where when I attempt to open firefox, a window will open for a split second before instantly closing again. My PC is up to date, I have tried refreshing firefox and doing a clean install, but cannot seem to overcome the issue, or even open it in safe mode. Does anyone have any advice? Many thanks in advance!

I normally put the computer to sleep at night, rather than powering down (although I do that periodically). After waking the computer, and clicking Firefox open, the browser loads with the two or three tabs I last had open, and within the minute closes. There's no warning or pop-up window saying what happened. I open it again, and within the minute it closes again. This happens four times. On the fifth try, Firefox opens without the previous tabs and with just one "New Tab" showing. After that it's fine. Also, it doesn't happen if I wake the computer and let it sit for a while before sitting down.

This is an oddity that I can live with. I'm just curious about what's going on.

Thanks, Ed LeRoy

i have uninstalled, reinstalled many times. I cannot load the program once it has been uploaded to my laptop. always get error that it cannot find the URL. ICON shows up on desktop but clicking on it just brings up that error.

I reinstalled Firefox I am trying to open the program in windows 11 it does not work I can still open it in administrator mode but then I cannot type anything in the search box I cannot browse to any websites or web page I cannot connect to the Internet through Firefox.

Starting yesterday, browsing to the ebay.com url resulted in Korean language text being displayed per the attached screenshot. The same continues today. I tried the ebay options of changing language by choosing a national flag. Choosing the US Stars and Stripes made no difference; I still got Korean text. I tried disabling my VPN; it made no difference. I tried choosing the Canadian Maple Leaf flag and got English text but Canadian prices.

I tried to report the problem (in Firefox) using ebay's contact links; but those links require logging in. I could not because I could not pass the Capcha challenge while remaining in Firefox.

Thinking that the problem might lie with Firefox, I loaded and used the Brave browser. Not only did I get US English and prices straightaway, I was able to login with ebay and report the problem. My VPN is active and has been since I loaded Brave.

Because I have these problems only while using Firefox, I came here to report the problem and ask for assistance resolving it.

Desde que he instalado Macos Sequoia 15.4.1, Firefox no consigue abrir ninguna ventana de internet. Internet funciona porque con Google Chrome o Safari sí que puedo navegar.

I am having Firefox crash on startup much like Firefox Desktop crashing on startup, initially in version 140, but I have downgraded to version 139 in my troubleshooting and I'm getting the same symptom.

It is frustrating that this does not seem to leave any records in the Windows event log or the Firefox crash reports, and that the fact that there's a known issue of this severity is rather hard to find.