Download newest version of firefox

More About Mozilla. More Mozilla Innovation. Improved hangs experienced by users of assistive technology such as NVDA when installing Firefox through the Microsoft Store bug Reference link to Download Firefox Firefox Privacy Notice. Get Mozilla VPN. Firefox for Android Get the customizable mobile browser for Android smartphones. Firefox Focus Simply private mobile browsing. Privacy Promise Learn how Firefox treats your data with respect. Firefox Focus Simply private mobile browsing.

Privacy Promise Learn how Firefox treats your data with respect. Firefox Blog Read about new Firefox features and ways to stay safe online. Release Notes Get the details on the latest Firefox updates.

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Answer questions and improve our knowledge base. Search Support Search. Home Firefox Download, install and migration Install an older version of Firefox.

Warning: Firefox now includes downgrade protection to prevent corruption of user profile data. If you install an older version, you'll be prompted to create a new Firefox profile. Table of Contents 1 Installing a previous version doesn't fix most problems 2 I still want to downgrade — where can I get the previous version? Note: Other problems can be solved with the Refresh Firefox feature.

It restores Firefox to its default state while saving your essential information. Warning: Older Firefox versions pose a significant security risk. Firefox Important : By default, Firefox is set for automatic updates. To prevent Firefox from automatically updating itself after you install an older version, you'll need to change your Firefox update settings: In the Menu bar at the top of the screen, click Firefox and select Preferences.