Use family safety settings to block inappropriate websites and searches on Windows, Xbox and mobile devices.

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.

With the Phone Link app on your PC, you can open and use apps from your Android device.

How to use the FILTER function in Excel to filter a range of data based on criteria you define.

Learn how to activate Windows using an internet connection, automated system, or live support advocate.

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

Learn how to switch between Office 365 for home subscription plans, which include Office 365 Home, Office 365 Personal, and Office 365 University. You will also learn how to redeem a free Office 365 subscription that came with your computer or tablet if you have an existing Office 365 subscription plan.

Learn how to reset or move OneDrive by unlinking and re-linking your PC.