If you bought Windows 10 or Windows 11 Pro upgrade in the Microsoft Store app, you'll receive a digital license instead of a product key in the confirmation email that was sent to confirm the purchase. That email address (MSA) will contain the digital license. You can use the digital license for activation.

This troubleshooter assists customers whose machines are not yet updated to the latest release, Windows 10 Version 1607. This update will initially be released only to a small set of targeted customers. This set will expand over time. Windows users can start the assistant from this article.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

To turn off your PC in Windows 10, select the Start button, select the Power button, and then select Shut down.. I'm having trouble opening the Start menu

Microsoft Defender is a security app that helps people and families stay safer online with malware protection, web protection, real-time security notifications, and security tips. Microsoft Defender is included in a Microsoft 365 Family or Personal subscription and works on your phone (Android or iOS), PC, and Mac.

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。

Before any app can access your camera, make sure camera access is turned on for apps in your user account. Make sure that Allow apps to access your camera is turned on. After allowing access to the camera, go to Choose which Microsoft Store apps can access your camera and turn on camera access for the apps you want. Only apps installed from the ...

Turn your PC off completely. To shut down, select Start and then select Power > Shut down.. Sleep. Sleep uses very little power, your PC starts up faster, and you’re instantly back to where you left off.

Important: you should limit the number of administrators on your Windows device because administrators have complete control over the system.Administrators can change settings, install software, and access all files. If too many people have this level of access, it could lead to security risks like malware installation or unwanted changes to your system.

On your PC, select the Start button and then select Photos to open the Photos app. Select Import > From a USB device, then follow the instructions. You can pick the items you want to import and select where to save them. Allow a few moments for detection and transfer.