Update could not be installed, make sure there are no other copies of Firefox running on your computer and then restart firefox, I cannot find any other version
Hello, keep getting the error quoted in my question and cannot update my firefox. I am running a mac OS X El Capitan Version 10.11.2. I have searched and cannot find another version of Firefox running on my computer. I DO NOT want to trash the whole thing and lose all my passwords, log ins, book marks exc. exc. Please advise, Thank You, Jim
All Replies (1)
Firefox comes in two or more folders on all computers. They are;
Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And one folder in the profile of each user on the computer.
If you remove the Firefox folder, the user folders would not be affected.
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 if there is one.
After rebooting the computer, run a registry scanner if you have one. 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.