Firefox 91 makes it easier to sign in to Microsoft accounts on the web

Firefox 91 should feel faster, and it speeds up the process for signing into Microsoft accounts online.

What you need to know

• Mozilla recently released Firefox version 91.
• Firefox 91 includes support for Windows single sign-on, making it easier to sign in to Microsoft accounts on the web.
• The latest version of the browser also has over 1,200 bug fixes and a handful of other new features.

Mozilla released Firefox version 91 this week. The latest version of the browser has over 1,200 bug fixes and a handful of new features compared to its predecessor. Among its new features is support for Windows single sign-on (SSO). This feature lets you log in to Microsoft work and school accounts with credentials from your PC.

The update also adds a "more comprehensive logic for clearing cookies," according to Mozilla. This prevents hidden data leaks.

Here's what's new, as outlined by Mozilla:

• Building on Total Cookie Protection, we've added a more comprehensive logic for clearing cookies that prevents hidden data leaks and makes it easy for users to understand which websites are storing local information. Learn more
• Firefox now supports logging into Microsoft, work, and school accounts using Windows single sign-on. Learn more
• The simplify page when printing feature is back! When printing, under More settings > Format select the Simplified option when available to get a clutter-free page. Learn more
• HTTPS-First Policy: Firefox Private Browsing windows now attempt to make all connections to websites secure, and fall back to insecure connections only when websites do not support it. Learn more
• We've added a new locale: Scots (sco)
• The address bar now provides Switch to Tab results also in Private Browsing windows.
• Firefox now automatically enables High Contrast Mode when "Increase Contrast" is checked on MacOS
• Firefox now does catch-up paints for almost all user interactions, enabling a 10-20% improvement in response time to most user interactions.

Firefox 91 performs catch-up paints for "almost all user interactions," according to Mozilla. The company explains that this results in a 10-20% improvement in response time for most interactions.

Mozilla Firefox 91

Free at Mozilla

The latest version of Firefox includes support for Windows single-sign on. It also has over 1,200 bug fixes.