How to switch from 32-bit to 64-bit Firefox
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- Creator: Joni
- Comment: Outlook is no longer bringing up any issues
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- Reviewed by: heyjoni
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This article only applies to Firefox on Windows.
Note: Mozilla plans to automatically switch users from 32-bit Firefox to 64-bit Firefox, on Windows 64-bit systems with at least 2 GB RAM. For more information, see this Mozilla blog post and the Firefox Win64 Mozilla Wiki.
The 64-bit version of Firefox can provide better performance than the 32-bit version. Want to switch to the 64-bit version of Firefox? Just install the 64-bit version and uninstall the 32-bit version. Your Firefox user data (passwords, bookmarks, settings, extensions and themes, etc.) will not be removed.
- 64-bit Firefox requires a 64-bit version of Windows 7 or higher. To find out if you are running a 64-bit version of Windows, visit this Microsoft help page.
- 64-bit Firefox only supports the Adobe Flash and Microsoft Silverlight NPAPI plugins. See this article about changes in Firefox plugin support.
Follow these steps to switch to 64-bit Firefox:
- Go to this Mozilla Firefox download page and click on the Windows 64-bit download link.
- Run the setup file you've just downloaded and follow the prompts to install the 64-bit version of Firefox.
- Close Firefox.
- Now it's time to remove the 32-bit version. Open the Windows menu and click on . Open the panel, then select the tab panel.
- Scroll down the list of appsprograms until you find the Mozilla Firefox item that contains x86 in the name. Select it, and click .
- Follow the prompts in the Uninstall Wizard to complete the removal of the 32-bit version.
