How to Uninstall Firefox

If you tried out Mozilla Firefox and decided it just wasn't for you, remove the program to switch back to your old Web browser, such as Internet Explorer. Erasing Firefox requires three basic tasks: deleting your profile data, uninstalling the program and selecting a new default browser. Before you start, consider exporting your bookmarks if you want to keep them, as uninstalling Firefox erases them permanently.

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The Programs and Features Control Panel assists with the removal of any application on your PC.
credit: Image courtesy of Microsoft

Step

Close Firefox if you are using it, but first open this page in another Web browser or print the page to follow these directions. Once Firefox is closed, press "Windows-R" to open the Run dialog box. Run the command "%APPDATA%" to open the folder on your computer that stores application settings.

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Open the %APPDATA% folder.
credit: Image courtesy of Microsoft
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Delete the "Mozilla" folder.
credit: Image courtesy of Microsoft

Step

Select the "Mozilla" folder and press "Del" to delete it. If you want to continue using another Mozilla product, such as Thunderbird, open the folder and delete the "Firefox" subfolder instead. If you might want to return to Firefox later, skip this step -- the folder does not take up much space on your computer, and you can leave it behind without any problems.

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Open the Programs and Features Control Panel.
credit: Image courtesy of Microsoft

Step

Search for and open the "Programs and Features" Control Panel. Press "Windows-W" to search for Control Panel on Windows 8, or use the search bar in the Start menu on Windows 7.

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Choose to remove Firefox.
credit: Image courtesy of Microsoft

Step

Select "Mozilla Firefox" in the program list and press "Uninstall."

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Complete the uninstallation.
credit: Image courtesy of Mozilla

Step

Click "Next" to remove Firefox.

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Open the Default Programs Control Panel.
credit: Image courtesy of Microsoft

Step

Search for and open the "Default Programs" Control Panel to select a new default Web browser. If you are about to download and install a new Web browser, skip this step and the remaining steps.

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Select the default programs option.
credit: Image courtesy of Microsoft

Step

Click "Set Your Default Programs."

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Pick a new Web browser.
credit: Image courtesy of Microsoft

Step

Select "Internet Explorer" -- or another Web browser, such as "Google Chrome" -- and press "Set This Program as Default" to automatically open websites using the selected browser.