Set up an eye tracking device. This guide helps you to set up and calibrate your eye tracking device for use with Windows eye control. We have tested it with the Tobii Eye Tracker 4C device; your experience with other devices might vary.

Important: You don't need to remove old security information unless there is an account security risk (e.g. someone else has access to your old mailbox).

When you start a focus session, a focus timer will appear on screen. To use additional focus tools in the Clock app, expand the focus timer to get the full view of the Clock app.

Important: Workbook links are considered potentially unsafe and must be enabled when you open a formula workbook.When you open a formula workbook, click Enable Content in the Message Bar to allow the workbook links to function. If you don't, Excel keeps the most recent values and disables refreshing the links with values from the data workbook.

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

In the Background apps permissions section, under Let this app run in the background, select one of the following options: Always—The app runs in the background, receiving info, sending notifications, and staying up-to-date even when you're not actively using it.This option may use more power.

If you open a page written in a different language than your preferred languages in settings, Microsoft Edge will automatically prompt you to translate it. The Translate icon appears in the address bar when you go to a web page that’s written in a foreign language. A language is considered foreign to you if it's not included in your Preferred languages list in Settings.

Once you've allowed microphone access to your apps, you can change the settings for each app. In Microphone settings, go to Choose which Microsoft apps can access your microphone, and turn on apps you want to use with it.For desktop apps, make sure that Allow desktop apps to access your microphone is turned on.

HDR content on Windows offers better brightness and color capabilities compared to traditional content (sometimes called standard dynamic range [SDR] content).

Windows 8.1 Update and Windows RT 8.1 Update (also known as KB 2919355) include improvements that make your favorite apps and settings easier to find and use, provide more familiar mouse and keyboard options, and update security and performance.Here’s what you need to know about installing this important update. Check to see if it’s already installed