Enable Microsoft Single Sign-On (SSO) in Firefox Browser

Microsoft Windows 11 allows users to use their Microsoft accounts to login to Windows. Instead of creating the local user accounts, you can use Microsoft accounts (like from Outlook.com) to sign-in to Windows PC. One of the benefits of using these online Microsoft accounts is that your settings are always on the cloud and it is easy to backup and restore your settings. Other operating systems like Android, macOS and iOS have been using this type of login for years with great success.

Even though Windows 11 users can still create the local offline user accounts, more and more people have started to use the Microsoft online accounts for accessing their Windows computers. If you also use Microsoft accounts for signing-in to your Windows PC, then you can use the same credentials to sign-in to Microsoft sites in the Firefox web browser. For this to work, you have to first enable the SSO login feature. Here is how it is done:

  1. Launch Firefox web browser.
  2. Click on the menu icon (three lines) and select the Settings from the menu.
  3. In the settings window, select the Privacy and Settings section.
  4. Scroll down to the Login and Passwords sub-section.Firefox SSO Login
  5. Select the checkbox labeled Allow Windows single sign-on for Microsoft, work and school accounts.
  6. Close the settings tab.

This feature is available only to the Windows users who are using Windows 10 or Windows 11. In addition, your Firefox web browser has to be version 91 or later. If you do not fulfill any of these requirements then you won’t be able to use the SSO feature. Furthermore, your Windows user should be able to use the Microsoft account for signing-in to your online accounts. You can check Windows settings to check whether you have already configured some of the Microsoft accounts for single sign-on usage in Firefox or other apps.