How to Uninstall Firefox
Approach One: Uninstall with Windows Add/Revmove ( Uninstall ) program
Step 1: Exit Firefox. From the menu at the top of the Firefox window, select File and then select the Exit menu item. Or close it directly.
Step 2: From the Start Menu in the Windows taskbar, select Control Panel. The Control Panel opens.
Step 3: Open the Windows program listing.
1. (Windows Vista) Click Uninstall a program.
2. (Windows 2000/XP) Double-click Add/Remove Programs.
Step 4: From the list of currently installed programs, select Mozilla Firefox
Step 5: To begin the uninstall:
1. (Windows Vista) Click Uninstall.
2. (Windows 2000/XP) Click Remove.
Step 6: In the Mozilla Firefox Uninstall Wizard that opens, click Next.
Stpe 7: Click Uninstall.
1. If Firefox is still open, you must close Firefox to proceed with the uninstall.
2. (Firefox 3) If you want to remove your Firefox user data and settings, put a check mark in the box that says Remove my Firefox personal data. If you select this option, Firefox will not preserve your bookmarks, saved passwords, and other data if it is installed again.
3. To provide feedback on your Firefox experience to the development team, select Tell us what you thought of Firefox.
Step 8: Click Finish.
Step 9: To remove added plugins or other files and folders that may not be removed by the uninstall you must manually delete the Firefox installation folder, which is located here by default: C:\Program files\Mozilla Firefox
Approach Two: Uninstall with Perfect Uninstaller.
With Perfect Uninstaller, you only need a few clicks to uninstall Firefox completely including its installation folder.
Step 1: Run Perfect Uninstaller. If you don’t have one, click here.
Step 2: Double-click Firefox to delete.
Step 3: Click Next and follow the on-screen to finish it.
