Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.
Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you lose personal data like bookmarks and passwords from profiles of other Firefox versions.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
(32 bit Windows) "C:\Program Files\Mozilla Firefox\" (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"
It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling. http://kb.mozillazine.org/Uninstalling_Fir efox
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 that "remove personal data" is NOT selected when you uninstall Firefox.
i can't sign on my computer with firefox, every time I click on it, it said can't load XP.COM, I had to get in by go to internet , does anyone have same problem as I am? what do you or how do you do, to get it back on, or it need to go pay some one get it fix?
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