Install an older version of Firefox
Often when there is a problem with a Firefox update, people look for a way to go back to the previous version. That usually doesn't solve the problem and will make your computer and information vulnerable to attack. This article gives you some alternatives to downgrading and links to old versions of Firefox if you do choose to downgrade.
Installing a previous version doesn't fix most problems
Problems with an update are generally not caused by the new version of Firefox, but rather the update process. Installing a previous version will not help in most cases. Instead, see:
- How to fix the Update Failed error message when updating Firefox
- Fix problems connecting to websites after updating Firefox
- Firefox hot topics
Ensure all security and security related software is fully updated. Some security software will need to be upgraded to a new version for each Firefox version update.
Optional software bundled with security software may also need updating. Such sofware may not be essential for your security, but if outdated, it may interfere with the use of Firefox, or cause Firefox to crash.
I still want to downgrade — where can I get the previous version?Although Mozilla has a website with old versions of Firefox for testing purposes, it is not recommended that you use anything but the latest version.
- Windows XP SP2 users: The last Firefox installer that can be executed on XP SP2 systems is Firefox 43.0.1 (US English).
If you can't use the latest version of Firefox, instead of installing an older version and changing your update settings, we recommend that you use the latest version of another browser:
Help us make Firefox better
If the latest version of Firefox is causing problems for you or you just don't like something about it, please give us feedback about it here: