Firefox Community Forum

I'm afraid I cannot continue using Firefox, after the last change, since I can no longer keep my tabs open after closing a session, as I specified in the settings: "Open previous windows and tabs." Can someone help?

I'm trying to setup a new laptop and when I try to log in I enter my password, I get my email with my 2 factor code, enter it and then it kicks me back to the password screen saying "Incorrect password" . I've reset the password a few times and still get the same behavior. Am I only allowed to have 1 device logged in at once? I know in the past I was able to have multiple computers logged in.

I have two monitors: Monitor 1 is Asus PG248QP(Run in 1920 x 1080 360hz landscape 100% scale) Monitor 2 is G272U Pro(Run in 4320 x 2160 60hz landscape 150% scale). I arrange them veritcally, monitor 2 on top and monitor 1 at the bottom.

When I minimize the non-fullscreen firefox window on the monitor 1, black/transparent border shows on the left, right, and bottom of the firefox window.

When I arrange two monitor horizontally, everything normal. I place monitor 1 at the left of monitor 2.

When I do this on the monitor 2, everything normal.

I have to use two monitors vertically, since I don't have much space.

I also tried different versions of firefox. for now, 129.0 to 136 has these problems. I have install chrome, brave, edge. None of them has this problem.

windows 11 23h2 (22631.5039) cpu: 13900k gpu: 4090 with 572.60 ram: 32gb x 2

Firefox 137.0

already tried refresh firefox profile.

I've been a Firefox user for ages but in the last week I haven't been able to use it at all. Every time I launch the desktop browser it gives me a blank page. I can type in addresses but they never take me anywhere. No google. Can't access settings. Nothing. I've tried seemingly everything. Safe mode. Administrator. Deleted everything and installer at least 5 times to try and start from scratch to no avail. Tried Revo. Tried multiple anti-malware cleans. System updates. Tried using older versions of Firefox. Everything short of a factory reset on the whole desktop which I'm really trying to avoid. I've checked every Reddit thread and forum post I could get my hands on and nothing is working. Does anyone know how to get Firefox working again? I've tried other browsers and hate them I would really like to keep using FF if I can. Picture shows what the app has looked like every time I boot it up or try to search anything for the past week.

Hello, a locally hosted application has a web interface which tries to send a data (POST request) to a remote resource (which is under my control) yet the web browser (Firefox ESR 128.9.0esr) blocks this resource request saying in a developer console (F12) this:

• NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_SECURITY, MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT)

• Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://myRemoteServerIP/request.php. (Reason: CORS request did not succeed). Status code: (null).

I suspect that the CORS blocking is a result of the first (SSL) error, AI also told me that I can configure my remote server/resource (e.g., using Apache, Nginx, or PHP) to include the necessary CORS headers in its responses and indeed the remote server of mine has such lines inside a PHP script that is receiving the request: header('Access-Control-Allow-Origin: *'); header('Access-Control-Allow-Methods: POST'); header('Access-Control-Allow-Headers: *');

The remote resource (server) is using self-signed SSL certificate and it is referenced using IP instead of a domain name.

When I try to do the same request via Private browsing window (without extensions), there is no NS_ERROR about self-signed cert. but only CORS one. When I try browser Librewolf 137.0.2-1 (my FF version is older: 128.9.0), the request is NOT blocked, is OK..

My main aim is not to avoid blocking in my browser, but in all main browsers for everyone.

Is it so that this kind of blocking is default behavior in browsers? Is there please any way to avoid that, beside getting a domain name and CA signed SSL certificate?

Hello, everytime I try and upload a video on YouTube with firefox, the video gets stuck at 0% processing,

This never happened in my 4 years of youtube and recently (a few weeks ago) this starting happening. I use firefox to stricly upload videos, and use chrome to browse with my other account casually.

Now Im forced to upload using chrome but I want to still use Firefox to upload videos. anybody know why this is happening? I've cleared cache serveral times and it still won't work. I have no adblockers etc.

New to Zen, love it. I installed in Ubuntu 22.04 and MacOS Sequoia. I set both to sync everything. Yet, even though the workspaces were synced, they came empty in the second device. Am I missing something?

Firefox is not letting me access my Windows or Microsoft account. (using WIndows 11) The login popup is asking for School or Work email, which is not applicable to me. I input my usual login information and Microsoft pop-up says account does not exist. When I login to Windows, using a different desktop (Windows 10), I do not have login in issues.

What is the browser setting that needs to be updated.

My gyazo extension stopped working .. i can not access my gyazo acc with firefox . i been using gyazo with firefox for years.. I was able to log in using chrome. But i like firefox. i have contacted gyazo support and ran threw all the listed trouble shooting steps. This just started in the past few days. Idk if there was a update or windows update or what . i tried everything . Anything you can add would be great.

This is the page i get when i try to log in. "Checking your browser before accessing gyazo.com ... Click here if you are not automatically redirected after 5 seconds." then nothing happens.

Apparently Firefox did an update (version 136.0.4) in the background while I was using Firefox on March 27. At some point I wanted to save a page to my bookmarks and realized all my bookmarks were missing. I had just used bookmarks earlier, so it had to have been an update. This happened to me before back in January 2025. I was without my bookmarks for several weeks when all of a sudden they showed up again.

I cannot use the instructions to go back to a previous profile, as the two options showing do not have my bookmarks, bookmark toolbar or customized Firefox homepage. I also cannot import my saved bookmarks to get them back. I get an error message when I attempt to do that option.

This is very frustrating, as I use my bookmarks, toolbar and customized homepage EVERY day. I have all my important links saved to bookmarks. Firefox developers need to find out why an update removes bookmarks, as this seems to be an ongoing issue with me. I've used Firefox for over 17+ years and never had bookmarks removed after an update before, so something in an update is causing this issue.

I have no idea at this point IF everything will return to normal in a few weeks like it did back in January. So right now I am without all my bookmarks. Please get this ongoing issue resolved, it's a royal pain. I need those bookmarks to maintain my daily routine for accessing financials, medical websites, etc.

Thanks for any help you can give me at this point. This is the second time it has happened.

Greetings...

I am a frequent user of multiple tabs whenever I use Firefox. As a result, the new Tab Groups feature interests me, primarily if it will help my to organize and manage my multiple open tabs. Initially, I have the following specific questions.

Q: Is there a maximum quantity of tabs that a Tab Group can contain?

Q: Is there a maximum quantity of Tab Groups that can be open at the same time?

Q: Does the use of one or more Tab Group negatively affect the performance of my web browser?

Q: Can a Tab Group be bookmarked? (Periodically, I need to bookmark a group of open tabs and I am currently able to do so by selecting all of the tabs then bookmarking them as a set.)

Q: Does the new Tab Groups feature represent a way to reduce the number of open tabs that appear at the top of my web browser - basically, a way for multiple open tabs to occupy a smaller space versus scrolling them across the top of my web browser?

Thank you very much for your feedback! Take care...

YouTube videos show up as "video Unavailable".. I can see and talk in the Chat but the video OR Live Stream is shown as "video unavailable".. This only happens in FIREFOX which is my main browser. Now if I sign out, I can watch the Live Stream OR video, but CAN NOT use the Chat, IF I am SIGNED IN, I CAN use chat BUT not see the video.

I am now using (which I hate using)Microsoft Edge to see the video and chat. I WOULD LIKE to be able to use FIREFOX again! Please Help

Last year, I never could get the info in to register, but it did let me do my taxes on it. I hope it lets me do mine this year. I really need to get it done, I have more to do than usual. While I was writing I saw someone ask if Mozilla and Firefox were the same, but I did not see the answer.