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。

Microsoft Edge is the browser recommended by Microsoft. Support for Internet Explorer ended on June 15, 2022. If any site you visit needs Internet Explorer 11, you can reload it with Internet Explorer mode in Microsoft Edge.

If you don’t find a solution, go ahead and share details about your experience there, then check back later for responses. Submit feedback. If you've tried the steps in this article and don't find a solution that works, use Windows Feedback Hub to report an issue. This will help Microsoft find the cause of this problem and improve your ...

Next to the password you want to change, select More actions , and then select Edit.

Note: Don't select the link under Upgrade your edition of Windows. That's a different process that will keep you in S mode. On the page that appears in the Microsoft Store (Switch out of S mode or a similar page), select the Get button. After you confirm this action, you'll be able to install apps from outside the Microsoft Store.

If you're running Windows 8.1 or earlier, or if your PC doesn't meet the minimum system requirements to run Windows 11, consider moving to a new Windows 11 device. Find a PC that meets your needs. Set up your Microsoft account to transfer files and favorites. One account connects your device across Microsoft apps and services like Microsoft 365, OneDrive, Edge, and Microsoft Store.

Due to the built-in security settings in iOS, other apps aren't able to see the address (URL) an app is trying to open, including those being opened in the web browser. To make sure the site you're going to isn't known to be dangerous, Defender needs to be able to see the address. To do that, we set up a local VPN.

你可以使用安装介质（U 盘或 DVD）来安装 Windows 的新副本、执行全新安装或重新安装 Windows。 要创建安装介质，请转到软件下载网站，你可以在这里找到分步说明。 在该网站上，你可以选择 Windows 版本，并使用 U 盘或 DVD 创建自己的安装介质。

For keyboard shortcuts in which you press one key immediately followed by another key, the keys to press are separated by a comma (,). For example, for è you would press Ctrl + `, release and then type e.

To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? and select Yes.. To contact us in Outlook.com, you'll need to sign in.