When you back up your files, apps, and settings in the cloud using your Microsoft account, you get 5 GB of free cloud storage and other benefits that protect your files with the latest security and make everyday tasks easier.

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。

For fast and simple editing, we've added Clipchamp as the official Microsoft video editor. Microsoft Clipchamp comes preinstalled on Windows 11 devices. To open Clipchamp, go to the search box on the taskbar, type Clipchamp, and select it from the results.Or you can select Start , then select All apps and scroll down to find Clipchamp in the list of apps.

Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

To add another account to OneDrive on your computer. If you already have a personal OneDrive account set up, you can only add work or school accounts.

Why accounts are locked and disabled. Microsoft accounts are usually locked if the account holder has violated our Microsoft Services Agreement.Here are some common reasons why accounts are locked, though not all account locks occur for these reasons:

Website notifications appear in the lower right corner of your screen and are also displayed in the Notification Center.When notifications are turned on for a website, they will still appear even if Microsoft Edge is closed.

Receive photos, videos, or other kinds of files that you or a friend shares from another device, such as a phone, laptop, or tablet. On your PC, select Start > Settings > Devices > Bluetooth & other devices. Learn how to pair.

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