Firefox Community Forum

Cannot get FireFox browser on my Windows 11 computer to sync with my Android mobile phone or the other way around. They both can see each other but they won't sync.

I'm getting totally disgusted with Firefox, Windows 11. FF updates automatically. More and more websites will not open when I'm using the browser, and they open just fine when I switch to another. Since I have used Firefox ever since its inception, it's extremely distressing. It doesn't matter if I turn off ad blocking and tracking software. The latest site that won't open is Substack, which works perfectly okay using the Brave browser. This is probably the 10 instance this month of a website that does not work with FF, including once that always did work just fine.

Other changes are also annoying, but I'll save them for another complaint.

When Firefox opened a couple of days ago ago the layout changed without my doing anything. I have a approximate 3/4 inch gap that wasn't there before. Can't figure out how to get it back the way it was before. Thank You

After the latest version was updated, Version 149.00.7, on my laptop, on 27 March 2026, the browser closed midway while I was working, and now I can no longer access Firefox.

When I click on the Icon to access I keep getting the following error message as per the attachment:

I have uninstalled Firefox and re-installed it THREE TIMES already', but I still get the same error as before, as per the screen print provided.

I have even tried to install Firefox with custom settings, but then in order to proceed with the installation the ONLY button to proceed was the "UPGRADE" option.

I am at my wits end because this is totally unacceptable and the updated version obviously DOES NOT WORK!!!

Your urgent attention and prompt action in sorting this out will be appreciated, thanks.

Hettie

I have the same issue as this person https://support.mozilla.org/kn/questions/1373153. I HAVE the "Open previous windows and tabs" option on, i also DON'T have the "Clear history and cookies when closing the window" nor "Clear history when Firefox closes" nor "Always use private browsing mode" on so the solution doesn't work for me. Firefox won't open previous tabs when i close the window. However upon restarting my PC i have noticed that when i start up Firefox, my previous tabs are opened. So it seems the action of closing the window is doing something to prevent Firefox from opening the previous tabs again.

Hi, I'm running FF 149.0 (64-bit) on Windows 11. I've used profiles for a while now and on several occassions I've "lost profiles". Currently I have three profiles which I set up and edited the icon and colour associated with each. When I launch FF I see the Profile Manager and can select any of the three and I can create a new profile which shows here. However, once in any one of the FF profiles I don't see the others - by which I mean that when I go via the hamburger lines top right and click on the current profile, the 'other profiles' section is blank. I also cannot edit the profile from using the edit pencil top right (after clicking the hamburger lines and clicking on the current profile), it takes me to about:editprofile but the page is completely blank. Confusingly, if I go to about:profiles I see two profiles, neither of which shows up in the Profile Manager! I'm going round in circles trying to understand where to edit my exisitng profiles and make sense of the five profiles that don't all show up in the same place!

I prefer to have VPN support no matter how I am using the internet. I would prefer that Mozilla get rid of all of the debug statements in the existing paid for VPN as it is a drag on my system. The debug issue exists on Windows 11, Android 16 and Linux (Debian 13.4).

Greetings team,

I;m using Firefox and Mozilla services from beginning, since I was child. I noted what MFA is not working, on my both accounts. it was my early guess also since last year but i fought it was my problem. No after resetting and getting notification what password is not correct makes me guess something is off. i might be wrong but looks like internal problem, maybe a breach what no one knows. what can i say from my side, as an IT company director and IT person. i can exclude all my thoughts about my side, since i changed and reinstalled everything on my devies. got fresh OS and hardened every device. problem still exists. maybe someone could check my accounts and internal settings for firefox security on accounts and MFA. since codes are not valid. had to disable mfa on my both accounts.

When I bring up the certificate-expired URL

<https://oaklandwiki.org/>

in Firefox 149.0 on Windows 11 I am told "You have added a security exception for this site." But not how to remove it. How do I do that? I did not see anything in Settings or about:config; did I miss it?

Printing emails from my computer, while in Mozilla website is impossible. Get a lot of very unnecessary stuff. I have to go to another browser, or print from my android phone. I don't understand why this is a problem.

I wanted to use the new VPN feature and the icon initially showed up in the top right, but it has disappeared and is not present in "customise toolbar" or privacy settings either.

For some unknown reason, it seems since March 28th or so, I haven't been able to paste clipboard images anymore into the browser, for example when on a site that allows pasting images in a chat. This is inconvenient and now requires me to either dig up the actual screenshot images (a nearly hidden folder in windows) or paste it in a separate app, save it, and then upload it as an image. Please fix this for user productivity reasons.

I would like to sign in my email address crawnsley775@gmail.com & I keep getting the notice, invalid email address. They want me to sign in another old email address crawnsleycer@sympatico.ca that I don`t use anymore as well as that password for it.