Firefox Community Forum

I wanted to refresh Firefox. When I downloaded the installer from the Mozilla website, I got this message: "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window." I finally downlaoded it from the App store and now I get this message "Your Firefox profile cannot be loaded. It may be missing or inaccessible."

I can't recollect doing anything lately that would have caused such a problem. I don't mess with the registry, and I don't use rogue programs. I do have a Surfshark VPN, which I disabled to download the latest version of Firefox.

I am running Windows 11 on a Dell PC, which is about 6 months old.

I didn't have any problems until reciently.

How can I fix this?

After an update minutes ago, Firefox immediately crashes on startup and crash reporter launches Rebooted computer. Launched firefox from command line with -safe-mode and -purgecaches

This is when the online help says to submit a report with the most recent bp-numbers. Thanks in advance for your assistance.

bp-2bd5243a-ff3d-4ea2-b0a2-ffb3d0260425 bp-28b30366-d7c1-46be-bc6b-1795a0260425 bp-e2aaa702-1190-4237-8ab3-7e5590260425 bp-93e9888c-569d-4148-b549-d97530260425 bp-d598e83a-3a9b-4874-b65a-ec7980260425

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

When I try to open Firefox, I get a box saying it is open, and I must close it. I do so, and a new Firefox pops up. However when I try to close that, it won't do so.

I keep getting the Firefox download page instead of the Firefox browser on my Windows 11 computer, even though I downloaded it several times after it was accidentally knocked off by some other program. How can I get it back to the Firefox browser?

Thanks so much~ dorcas

I can't open Firefox. I keep getting the message "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window.". I can't find it to close. I tried uninstalling it, but I keep circling back to the same message. I tried refreshing it and again same message. I un installled Surfshark VPN, I ran Windows Defender antivirus. I am now out of ideas. I do have two profiles, but the message about deleting them is scary. I don't want to do anything until I understand what I am doing.

Windows 11; all updates are installed, Dell computer purchased in October, with AMD processor.

I have tried all suggestions from the "Firefox is already running..." page but could not fix the problem.

I don't know if this is a problem, but I have several profile folders (see image). The top one is empty, but two folders below that one, are 2 GB or more in size.

Should I delete some or any of them?

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."

My iMac automatically updated to the latest version of Firefox and now Firefox won't open at all. I keep getting an error message about installing a helper tool. I tried both installing the Helper Tool and canceling (see attached image) with no success. Please advise.

Thanks! Carol Boehler cboehler2@unl.edu

I reinstalled it many times. I also force-quit the process in Task Manager. Basically, I did everything Google told me to do. But everything was the same. It says: Firefox is already running but is not responding. To open a new window, the running Firefox process must be terminated. please help