Device encryption helps protect your data and it's available on a wide range of Windows devices.

如果已购买 Microsoft 365 家庭版，则最多可以与家庭中的其他五人共享你的订阅权益，无需额外费用。 登录到 Microsoft 帐户共享页面。 请务必使用用于设置 Microsoft 365 家庭版订阅的同一 Microsoft 帐户。

Learn more about how to find all your apps and programs in the all new Windows Start menu.

Learn how to change the email address or phone number that’s associated with your Microsoft account.

If you're having trouble launching Microsoft Store, here are some things to try: Reset the Microsoft Store cache: Press the Windows Logo Key + R to open the Run dialog box, type wsreset.exe, and then select OK.

Get productive quickly with Microsoft 365 videos and tutorials. Explore Microsoft 365 training guides and tips to collaborate with anyone, anywhere.

If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Learn how to set an out of office status message in the Teams mobile app using our step-by-step guide. It's a great way to let your colleagues know your availability.

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