Find what version of Firefox you are using
Revision Information
- Revision id: 50945
- Created:
- Creator: AliceWyman
- Comment: updated "About Mozilla Firefox" screenshot
- Reviewed: Yes
- Reviewed:
- Reviewed by: AliceWyman
- Is approved? Yes
- Is current revision? No
- Ready for localization: Yes
- Readied for localization:
- Readied for localization by: AliceWyman
Revision Source
Revision Content
It is often important to know which version of Firefox you are using. You can find out your Firefox version using one of these methods:
Using the About Mozilla Firefox window
To access this window:
- At the top of the Firefox window, click the button, go over to the menu and select .On the menu bar, click the menu and select .At the top of the Firefox window, click the menu and select .
The About Mozilla Firefox window will appear. Your version number is listed underneath the Firefox name.
Note: Opening the About Mozilla Firefox window will, by default, start an update check to see if an updated version of Firefox is available. For more information, see Update Firefox to the latest release.
Using the Troubleshooting Information page
You can find out your Firefox version without starting an update check by using the Troubleshooting Information page. To access this page:
- At the top of the Firefox window, click on the menu and select .On the menu bar, click on the menu and select .At the top of the Firefox window, click on the button, go over to the sub-menu and select .At the top of the Firefox window, click on the menu and select .
The Troubleshooting Information page with the address about:support will appear in a new tab. Your Firefox version number is listed under the Application Basics section.
For more information about this page, see the Use the Troubleshooting Information page to help fix Firefox issues article.