Firefox logo on a purple background

If you need to troubleshoot Firefox (or your add-ons) on Windows, Mac, or Linux, you can restart the browser from within the app without losing any of your open tabs. Here’s how to do it.

First, open Mozilla Firefox. In the address bar, type about:profiles and hit Enter (or Return on Mac).

In Firefox, type about:profiles in the address bar and hit Enter.

On the “About Profiles” page that opens, locate the box labeled “Restart” in the upper-right corner. To restart the browser while keeping all your open tabs, click “Restart Normally.”

Firefox will close and start again just as if you had selected “Exit” or “Quit Firefox” from the main Firefox menu. However, Firefox will reopen all your tabs after it restarts.

RELATED: How to Close All Firefox Windows at Once

If you need to troubleshoot problematic add-ons instead, revisit the about:profiles page and click “Restart With Add-ons Disabled.”

After clicking, you’ll see a pop-up warning dialog about opening Firefox in Troubleshoot Mode. Here you’ll find two options.

By clicking “Refresh Firefox,” you have the option to refresh Firefox, which removes your add-ons and restores Firefox to a default state. This is a drastic step that we only recommend only as a last resort. You’ll lose your add-ons and configuration.

Otherwise, you can just temporarily disable your extensions and customizations using Troubleshoot Mode. Nothing will be permanently removed or altered. To do so, click “Open.”

Firefox will close and restart with your customizations and add-ons disabled. To re-enable them, close all Firefox windows and restart the app, or revisit about:profiles and click “Restart Normally.”

Good luck, and happy browsing!

Profile Photo for Benj Edwards Benj Edwards
Benj Edwards is a former Associate Editor for How-To Geek. Now, he is an AI and Machine Learning Reporter for Ars Technica. For over 15 years, he has written about technology and tech history for sites such as The Atlantic, Fast Company, PCMag, PCWorld, Macworld, Ars Technica, and Wired. In 2005, he created Vintage Computing and Gaming, a blog devoted to tech history. He also created The Culture of Tech podcast and regularly contributes to the Retronauts retrogaming podcast.
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