Firefox starts automatically when I restart Windows

This article only applies to Firefox on Windows.

If you leave Firefox open when Windows shuts down, Firefox may automatically re-open with your previously opened tabs the next time you start Windows. Here's how to disable the feature.

Prevent Firefox from starting automatically

  1. In the address bar, type about:config and press EnterReturn.

    • The about:config "This might void your warranty!" warning page may appear. Click I'll be careful, I promise!I accept the risk! to continue to the about:config page.
  2. Search for toolkit.winRegisterApplicationRestart and double-click on it to set its value to false.

There's no need to restart Firefox; the changes take effect immediately.

// These fine people helped write this article:AliceWyman, Michele Rodaro, Joni, YD. You can help too - find out how.

Was this article helpful? Please wait...

Volunteer for Mozilla Support