A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

Learn how to get Microsoft Store updates for your apps and games. Download the latest versions of Microsoft Store apps and games.

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:

Word 2021 for Windows gives you new ways to create compelling content. This article provides an overview of the new features you can discover.

Get the steps for how to verify an email address in your Microsoft account.

Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.

The Microsoft Edge feature that blocks pop-ups is effective in preventing websites from automatically opening a new window or tab, or a partial window on top of your current web page. This feature is turned on by default. There are many different types of pop-ups, including advertisements, notices, offers, or alerts that can appear at various times on any web page. Some can be helpful, such as ...

Learn how to change settings to enable Secure Boot if you are not able to upgrade to Windows 11 because your PC is not currently Secure Boot capable.

Learn how to use the PC Health Check app to help you improve your device performance.

Find help and support content for Microsoft Phone Link. Learn time-saving tips and explore how you can use Phone Link to stay productive.