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

Windows Security is pre-installed on Windows 10 and ready for you to use at any time.

Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.

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:

Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

Learn how to add a OneDrive account to your computer or mobile.

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Learn how to reinstall Windows on your PC and how activation works after it's installed.

Follow these steps to temporarily turn off Defender antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats.

Find your product key to activate Windows. 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.