Diễn đàn hỗ trợ Firefox

I got so frustrated with not being able to reinstall Firefox because I kept getting the error message "Your Firefox profile cannot be loaded. It may be missing or inaccessible". So I deleted all the profiles after copying them to an external hard drive. Then I copied the file ending in.test from the Old Firefox data folder on my desktop to the AppData/Roaming/Mozilla/Firefox/ profile. Then I copied the biggest file ending in .default from the backed up Local profiles to the AppData/Local/Mozilla/Firefox/ profile. It doesn't matter if I delete or keep the Old Firefox data folder on my desktop, I still get the Profile Missing error message. What can I do, so my laptop would appear as if it had been powered up straight out of the box and never had Firefox initially installed or what do I do with my profiles to make them accessible?

I have been with Firefox for years as default browser but recently been having probs. It wont open from Start or my taskbar. Keeps going to New tab at top of screen. Tried reinstalling but still the same. What has happened?

latest update from 150.01 to 150.02 crashed compatibility error can't open firefox. error platform version 150.01 is not compatible with minver>=150.02. can't even open anymore

I had been using the Mozilla Firefox VPN for a few weeks, but now it will not launch. I sign in without a problem but when I click on the VPN icon on the toolbar, nothing happens. I just get the pop-up to try the VPN and "Get Started" (see attachment).

Please advise.

Hello, I cannot open my browser. I did try Microsoft edge and that one worked....but I want my Firefox one! I did reset my modem. Can you help me please?

Sincerely, Marita Block

According to everything I CAN see, I have Firefox 150. I am still using Windows 10 and I don't seem to have problems with that. However, I CANNOT get to the Firefox Browser. I am very frustrated with only seeing Mozilla this, Mozilla that, but not Firefox. When I go to the help section I am able to click on Firefox Browser, so I know you still have it. The main item that is very different is clicking on Firefox to open it, and then seeing 3 different ways to login. I'm at a loss, and I'm frustrated. Please help me so that I may sign in to Firefox BROWSER.

By the way, when I click on Themes-Add-ons for Firefox and choose what I think looks like PINK, it isn't pink! It's a very strange purple color. I want PINK. Thank you, RhonCa

Firefox accounts renamed Mozilla accounts - What you need to know

i am using fox to open the zoom , but is not working

в моменте браузер перестал запускаться , я люблю твикать и оптимизировать виндовс подумал дело в ней , но переустановил виндовс скачал обновления виндовс и начал по одному шагу оптимизировать и делать настройки виндовс , по итогу настроил точно так же как и раньше , но браузер работал , скачал античит фейсит и перестал работать , сейчас переустановил виндовс не настраивал вообще только скачал браузер и античит фейсита и браузер перестал запускаться выдавая ошибку

Firefox cannot start because Mozilla process is already running and I cannot stop it.

I tried to restart my PC but no success. I reinstalled Mozilla/Firefox but again error message appears:

"Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window."