How to switch from 32-bit to 64-bit Firefox

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  • Creator: AliceWyman
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This article only applies to Firefox on Windows.

Want to switch to the 64-bit version of Firefox? Just install the 64-bit version and uninstall the 32-bit version. See this blog post to learn more about 64-bit Firefox.

Warning: The 64-bit version of Firefox requires a 64-bit version of Windows 7 or higher. Find out if you are running a 64-bit version of Windows by visiting this Microsoft article.
  1. Go to this Mozilla Firefox download page and click on the Windows 64-bit download link.
    DownloadWin64-bit
  2. Open the setup file you've just downloaded and follow the prompts to install the 64-bit version of Firefox.
  3. Now it's time to remove the 32-bit version. Open the Windows Start menu, and click on SettingsControl Panel. Open the SystemPrograms panel, then select the Apps & features tabPrograms and Features panel.
  4. Scroll down the list of appsprograms until you find the Mozilla Firefox item that contains x86 in the name. Select it, and click Uninstall.
  5. Follow the prompts in the Uninstall Wizard to complete the removal of the 32-bit version.
Note: Switching to 64-bit Firefox doesn't remove any of your Firefox user data such as passwords or bookmarks.