Buy stuff from Microsoft Store online (from your mobile device, on Xbox One, in the Microsoft Store app on your Windows 10/11 or Windows 8.1 device, or via the web).

Windows 11 is designed to bring you closer to what you love and is releasing at a time when the PC is playing an even more central role in the way we connect, create and play.

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

To access your sign-in options, go to Start > Settings > Accounts > Sign-in options.. Or just select this button: Go to Sign-in options. Change or manage your password or PIN. To change your password or PIN, go to Start > Settings > Accounts > Sign-in options. Select PIN (Windows Hello), and then select Change PIN.

With online threats getting more advanced day by day, it is important to prioritize the safety of your web browsing. Microsoft Edge offers several features and practices that can enhance your online security and protect your personal information.

When prompted, enter the product key. You can find the product key on the sticker on the CD case or other packaging. If you need help, see Find your Product Key for Office 2007.

An upgrade differs from an update in that it moves your PC from a previous version of Windows—such as Windows 10—to Windows 11. This FAQ is intended to answer questions about upgrading to Windows 11.

Select Add a printer or scanner.. Wait for it to find nearby scanners, then choose the one you want to use and select Add device.

但如果需要测试多个条件，例如我们假设所有条件都需要为 True 或 False (AND)，或只有一个条件需要为 True 或 False (OR)，或者如果想要检查某个条件是否不 (NOT) 符合你的条件，这时该怎么做呢？这三个函数均可以单独使用，但它们更常见于与 IF 函数成对使用。

If Windows Update finds an updated driver, it will download and install it, and your printer will automatically use it. If a device driver couldn’t be installed automatically, there may be an optional driver available that your printer can use.