You can find the full installer of the current Firefox release (94.0. You may have to disable security software temporarily in case the problem persists. *(64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\" You need to do a clean reinstall and remove the Firefox program folder to ensure that all files are replaced. *(32 bit Windows) "C:\Program Files\Mozilla Firefox\" *Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions. *Download the Firefox installer and save the file to the desktop
Read this answer in context ? 1 All Replies (1) Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure NOT to remove personal data when you uninstall Firefox as that will remove all Firefox profile folders and you lose your personal data.
This usually happens because of a failed Firefox update that left you with a mixture of old and updated files in the Firefox program folder.ĭo a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.