How to calculate the number of days, months, or years between two dates using the DATEIF function in Excel.

Internet Explorer 11 support ended on June 15, 2022. If any site you visit needs Internet Explorer 11, you can open it with Internet Explorer mode in Microsoft Edge.

Find out what model of Surface you're using. There are several ways to find out which Surface device model you have. Look in the Surface app

Leave your Android device in your pocket the next time it rings — pick up the call from your PC instead. Calling requires Bluetooth capability on both your PC and on your Android device, so make sure you have it turned on for both.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Learn how to recover files that have been lost, deleted, or accidentally changed.

Learn how to use Remote Desktop in Windows. On your Windows, Android, or iOS device: Open the Remote Desktop app (available for free from Microsoft Store, Google Play, and the Mac App Store), and add the name of the PC that you want to connect to (from Step 1). Select the remote PC name that you added, and then wait for the connection to complete.

Learn how to use Snipping Tool to capture a screenshot, or snip, of any object on your screen, and then annotate, save, or share the image.

System requirements and setup steps for the Phone Link app

Learn how to add user accounts in Windows 10 and Windows 11. With an account, each person has separate files, browser favorites, and a private desktop.