Learn how to access and manage your Windows sign in options. Use a password, Windows Hello, or a security key to unlock your device.

Change your screen saver settings. Select the Start button, then go to Settings > Personalization > Lock screen, and select Screen saver settings.In the Screen Saver Settings window, choose a screen saver from the drop-down list.

How to use the LOOKUP function in Excel to search in a single row or column and find a value from the same position in a second row or column.

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Updates to the default screen and sleep settings now help you use energy more efficiently and extend battery life. You can find efficiency settings in Windows 11 at Settings > System > Power & battery.. For a guided walkthrough of how each of the power and battery settings can improve your device's performance, click the button to open the Get Help app:

Create a top-level folder in new Outlook. In the folder pane on the left, right-click your email address, or hover over it and select More options > Create new folder.

Add a font. Download the font files. These often come compressed in .zip folders.In one .zip folder, you might find several variations on the same font, such as “light” and “heavy.”

In Outlook, the black color theme includes dark mode, which provides a black background (instead of white) for the message window. You can switch to a white background for the message window if you prefer.

Play music and video in more formats and stream it to more places with Windows Media Player 12.

Having a problem with your Excel? Check this page for recent issues that we've discovered, and what you can do about them.