Right after Instillation I get the Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window.
I was getting the error of "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window." And none of the solutions I found were working, including restarting my computer, closing background processes etc. So I decided that I would just uninstall firefox and reinstall it fresh. Only after the instillation when It started up for the first time I still got the same error message. How can there be firefox running when I've uninstalled the old fire fox / this is the first time I've opened the new install?
Please Advise.
All Replies (1)
Did you try this? https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix
https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding
https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding
Let’s do a full clean re-install; Download Firefox For All languages And Systems {web link} Save the file. Then Close Firefox.
Using your file browser, open the Programs Folder on your computer.
Windows: C:\Program Files
C:\Program Files (x86)
Mac: Open the "Applications" folder.
https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac
Linux: Check your user manual.
If you installed Firefox with the distro-based package manager,
you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package
from the Firefox download page, simply remove the folder
Firefox in your home directory.
Do Not remove the profiles folder.
Look for, and rename any Mozilla or Firefox program folders by adding .old to them. Do not rename the Mozilla Thunderbird folder.
After rebooting the computer, run a registry scanner. Then run the installer. If all goes well, remove the OLD folders when you are done.
If there is a problem, start your Computer in safe mode and try again.