Wait a Few Seconds. If you’ve just closed all your Firefox windows and quickly tried to open a new one, you may see this message. This is
End Firefox.exe in the Task Manager.
Restart Your Computer.
Remove the Profile Lock.
How to fix the ‘Firefox is already running’ issue?
Use the Windows Task Manager to close an existing process. Right-click, i.e., on an empty space on the Windows taskbar, and select “Task Manager” (or press Ctrl + Shift + Esc).
When Windows Task Manager opens, select the Processes tab.
Select the entry for firefox.exe (press F on your keyboard to find it) and click End Process.
In the Dispatcher Task Alert dialog box that appears, click Yes.
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How to fix when Firefox not working on Windows 10?
Check your Internet connection. A poor or intermittent internet connection in your home or office can cause Firefox to crash and sometimes even freeze.
Restart Firefox. Firefox will probably not start if you abruptly closed it properly the last time you used it. Repair
Try the mode in Firefox.
Disable hardware acceleration.
Clear cache and cookies.
Why is Firefox not responding in Windows 10?
Open Firefox, click on the familiar menu (top right).
At the moment that appears, click the “Restart” button, then select “Run in Safe Mode” and wait for Firefox to restart in Safe Mode.
Use Firefox in safe mode for a while and see if the person experiences the same instability.
How do I fix Firefox not responding?
How can I fix an unresponsive Firefox? How to fix “not responding” errors in Windows 10? Try another browser. Start the car. Update the video card from the video card driver. Update drivers automatically. Disable hardware including Firefox acceleration. Restart Firefox files. Create a new place database. Delete session recovery files. Why is my Firefox still not responding?
How do I fix Firefox error already running?
Kill Firefox processes. 1.1 Ubuntu Linux.
Unlock the profile file.
Remove the -no-remote configuration option.
Initialize the connection to the content share.
Check permissions.
Getting data based on a profile.
Can’t open Firefox says already running?
If Firefox didn’t close normally last time, some Firefox processes may still be running in the background. These running processes may be the reason why Firefox is running. If you see the correct interface, you can click the “Close Firefox” button and see if you can open it again any day.
How do I fix Firefox not responding?
In the local menu bar at the top of the TV, click Firefox and select Settings.
Select the General panel.
In the “Performance” section, uncheck “Use recommended performance settings”.
Disable the hardware usage accelerator, if available.
Click on the Firefox compilation, select it and exit.
What does it mean a copy of Firefox is already open?
“Close – Firefox. A copy for Firefox is already open. Only one copy of Firefox can be accessed at a time.” You may receive this message if Firefox contains or recently crashed, you canceled part of the process. The reason you’re getting this error is probably because you almost certainly have a lock file in your Firefox profile.
How do you fix Firefox is already running but is not responding the old Firefox process must be closed to open a new window?
Kill Firefox processes. 1.1 Ubuntu Linux. 1.2 Use the Windows Task Manager to start the Firefox process. Delete the presence lock file. Initialize the connection to this shared folder. Check permissions.
How to fix the ” Firefox is already running ” error?
1 Wait a few seconds. If you explicitly closed all your Firefox and Windows quickly tried to open a new version, you may see this experience. 2 Close Firefox.exe in Task Manager. If a short wait doesn’t help, Firefox has crashed and should be closed gracefully. 3 Restart your computer. 4 Unlock the profile. …
How do I fix Firefox is already running error in Linux?
- End Firefox processes. The best thing for you to enjoy is to simply exit the Firefox program and reopen it.
- Start Firefox in safe mode.
- Usually delete the profile lock file.
- Create a completely new profile.
- Nuclear option: Reinstall Firefox.
- Conclusion.
Charles Howell is a freelance writer and editor. He has been writing about consumer electronics, how-to guides, and the latest news in the tech world for over 10 years. His work has been featured on a variety of websites, including techcrunch.com, where he is a contributor. When he’s not writing or spending time with his family, he enjoys playing tennis and exploring new restaurants in the area.