Install an older version of Firefox
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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
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.- Firefox 16 (US English)
- Directory of other versions and languages
- Firefox 16 (US English)
- Directory of other versions and languages
- Firefox 16 (US English)
- Directory of other versions and languages
- Firefox 17 (US English)
- Directory of other versions and languages
- Firefox 17 (US English)
- Directory of other versions and languages
- Firefox 17 (US English)
- Directory of other versions and languages
- Firefox 18 (US English)
- Directory of other versions and languages
- Firefox 18 (US English)
- Directory of other versions and languages
- Firefox 18 (US English)
- Directory of other versions and languages
- Firefox 19 (US English)
- Directory of other versions and languages
- Firefox 19 (US English)
- Directory of other versions and languages
- Firefox 19 (US English)
- Directory of other versions and languages
- Firefox 20 (US English)
- Directory of other versions and languages
- Firefox 20 (US English)
- Directory of other versions and languages
- Firefox 20 (US English)
- Directory of other versions and languages
- Firefox 21 (US English)
- Directory of other versions and languages
- Firefox 21 (US English)
- Directory of other versions and languages
- Firefox 21 (US English)
- Directory of other versions and languages
- Firefox 22 (US English)
- Directory of other versions and languages
- Firefox 22 (US English)
- Directory of other versions and languages
- Firefox 22 (US English)
- Directory of other versions and languages
- Firefox 23.0.1 (US English)
- Directory of other versions and languages
- Firefox 23.0.1 (US English)
- Directory of other versions and languages
- Firefox 23.0.1 (US English)
- Directory of other versions and languages
- Firefox 24.0 (US English)
- Directory of other versions and languages
- Firefox 24.0 (US English)
- Directory of other versions and languages
- Firefox 24.0 (US English)
- Directory of other versions and languages
- Firefox 25.0.1 (US English)
- Directory of other versions and languages
- Firefox 25.0.1 (US English)
- Directory of other versions and languages
- Firefox 25.0.1 (US English)
- Directory of other versions and languages
- Firefox 26.0 (US English)
- Directory of other versions and languages
- Firefox 26.0 (US English)
- Directory of other versions and languages
- Firefox 26.0 (US English)
- Directory of other versions and languages
- Firefox 27.0.1 (US English)
- Directory of other versions and languages
- Firefox 27.0.1 (US English)
- Directory of other versions and languages
- Firefox 27.0.1 (US English)
- Directory of other versions and languages
- Firefox 28.0 (US English)
- Directory of other versions and languages
- Firefox 28.0 (US English)
- Directory of other versions and languages
- Firefox 28.0 (US English)
- Directory of other versions and languages
- Firefox 29.0.1 (US English)
- Directory of other versions and languages
- Firefox 29.0.1 (US English)
- Directory of other versions and languages
- Firefox 29.0.1 (US English)
- Directory of other versions and languages
- Firefox 30.0 (US English)
- Directory of other versions and languages
- Firefox 30.0 (US English)
- Directory of other versions and languages
- Firefox 30.0 (US English)
- Directory of other versions and languages
If you can't use the latest version of Firefox, we recommend that you use the latest version of another browser:
Help us make Firefox better
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