使用 Windows 设置应用更改桌面背景和颜色。

Make sure your Windows 10 phone has all the latest updates for Windows. To check for the latest updates, on Start , swipe over to the All apps list, and then select Settings > Update & security > Phone update > Check for updates. This lets you check for the latest updates for Windows and the latest device drivers.

The new Teams has full feature parity for almost all features including custom line-of-business apps, third-party apps, breakout rooms, 7x7 video, call queues, PSTN calling, contextual search in chats and channels, cross-post a channel conversation, and more. If you'd like to switch back to classic Teams, it's easy to toggle back and forth.

Additionally, Microsoft Edge will soon be the only Microsoft browser that supports Microsoft 365 web apps and services. Support for Microsoft Edge Legacy ended on March 9. 2021. If you attempt to access Microsoft Web apps and services from Internet Explorer after August 17, 2021, you may experience degraded performance or be unable to connect ...

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。

有些网站专为与 Internet Explorer 一起使用，它们具有 Microsoft Edge 等新式浏览器不支持的功能。 如果你需要查看其中的某个网站，可使用 Microsoft Edge 中的 Internet Explorer 模式。

Download our Formulas tutorial workbook. We've put together a Get started with Formulas workbook that you can download. If you’re new to Excel, or even if you have some experience with it, you can walk through Excel’s most common formulas in this tour.

You can use the Settings app to change your PIN. In the Settings app on your Windows device, select Accounts > Sign-in options or use the following shortcut: Sign-in options. Select PIN (Windows Hello) > Change PIN , and then follow the instructions. You must enter your old PIN in order to change to a new one

Note: If you don't see Extensions to the right of your browser address bar, select Settings and more > Extensions.

Learn how to use Remote Desktop in Windows. On your Windows, Android, or iOS device: Open the Remote Desktop app (available for free from Microsoft Store, Google Play, and the Mac App Store), and add the name of the PC that you want to connect to (from Step 1). Select the remote PC name that you added, and then wait for the connection to complete.