These cannot be easily recovered unless they have been backed up to an external device! See Back up and restore information in Firefox profiles. Doing so could permanently delete your Firefox profile data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. WARNING: Do not use a third party uninstaller as part of this process. More information about reinstalling Firefox can be found here. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.Double-click the downloaded installation file and go through the steps of the installation wizard.If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory. Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux.Mac: Delete Firefox from the Applications folder.Delete the Firefox installation folder, which is located in one of these locations, by default:.After the download finishes, close all Firefox windows (or open the Firefox menu and click the close button ).

Download the latest Desktop version of Firefox from (or choose the download for your operating system and language from this page) and save the setup file to your computer.To do a clean reinstall of Firefox, please follow these steps: Note: You might want to print these steps or view them in another browser. This process does not remove your Firefox profile data (such as bookmarks and passwords), since that information is stored in a different location. This means you remove your Firefox program files and then reinstall Firefox. Certain Firefox problems can be solved by performing a Clean reinstall.

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