How to enable Windows SSO login in Firefox

Windows single sign-on (SSO) is a new Firefox feature that allows you to log in to Microsoft, work, and school accounts using credentials from your Windows 10 or 11 operating system. To enable it:

1. In the Menu bar at the top of the screen, click Firefox and select Settings (or Preferences, in some cases).Click the menu button and select Settings.
2. Select Privacy & SecurityPrivacy and SecurityPasswords and autofill on the left.
3. Go to the Passwords section and check the box next to the Allow Windows single sign-on… setting.

   

To see if you have any accounts configured, enter accounts in the Windows taskbar search field, and click Email & accounts. You'll see a window that looks like this:

If you have accounts in the Accounts used by other apps section, Firefox will use that information to log you in to Microsoft sites including Outlook and Office 365, as well as any work or school accounts that use Microsoft authentication.