

The uninstaller does not remove any user data such as history or bookmarks. Uninstalling Firefox does not remove any user data such as bookmarks, passwords and cookies. To remove other files and folders that may not be removed by the uninstall, you must manually delete the Firefox program folder from the location shown in the Uninstall Mozilla Firefox window (usually C:\Program Files\Mozilla Firefox or C:\Program Files (x86)\Mozilla Firefox). Locate folders named 'Mozilla' under Documents and Settings or AppData Open the Registry Editor by pressing the Windows Key + R type regedit and click OK.Click Finish to complete the uninstall.So make sure you do the Step 2 and itll work. For some reason - if the folders arent deleted - FireFox doesnt work even if its un-installed and re-installed. To begin the uninstall, click the Uninstall button at the top of the list. Go to Program Files and delete the entire Mozilla FireFox folder with all the files inside it. Select Mozilla Firefox from the list of currently installed programs. Whenever I go into the Control Panel and click on 'Uninstall a Program,' and then click on the Firefox icon, I then get a pop-up tellling me that Windows needs my permission to continue. The next window that opens will show the location of the Firefox program that will be uninstalled. In the Control Panel window click the Uninstall a program link under the Programs section. Also, I find it strange that Im also unable to uninstall Firefox. Click Next in the Mozilla Firefox Uninstall window.

To finish uninstalling Firefox, follow these steps: This can fix many issues by restoring default settings and removing add-ons. Note: Instead of uninstalling Firefox, you can try the Refresh Firefox option included in the uninstaller.
