Contact Us - Microsoft Support
Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.
Windows Update Troubleshooter - Microsoft Support
Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.
Fix Ethernet connection problems in Windows - Microsoft Support
On your home router. Try these things first to help you fix or narrow down the connection problem. Check the Ethernet cable and connection.Make sure the Ethernet cable is securely plugged into the Ethernet port on both your router and Windows 11 PC.
在 Excel 中将 IF 与 AND、OR 和 NOT 函数配合使用 - Microsoft 支持
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。
Applies To: Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App, Excel for Windows Phone 10
Get a personalized email address in Microsoft 365
Tip: If you have a Microsoft 365 Family subscription, people you've shared the subscription with can also set up a personalized email address with your connected domain.After you've set up your domain, people you've shared with will see an option to add a personalized email address in the premium features section of Outlook settings.
Applies To: Outlook.com
Save or forget passwords in Microsoft Edge - Microsoft Support
Note: The Automatically save passwords setting has been retired with Microsoft Edge version 124 and later. Instead, Edge will offer to save your passwords each time you enter new credentials in the Edge browser. All your previously autosaved passwords will continue to be available for a seamless login.
How to set up and test microphones in Windows - Microsoft Support
In Sound settings, go to Input to see your connected microphones. If it's a Bluetooth microphone, select Add device.
Fix microphone problems - Microsoft Support
If you want to give access to desktop apps, make sure that Let desktop apps access your microphone is turned on.You can't turn off microphone access for individual apps. Others can't hear me. Try the following solutions:
Download Microsoft Authenticator - Microsoft Support
To install Authenticator on your iOS device. Scan the QR code. or download and install Authenticator from the Apple app store. Get the app
Using your keyboard - Microsoft Support
The following illustration shows how these keys are arranged on a typical keyboard. Your keyboard layout might be different. Typing text. Whenever you need to type something in a program, e‑mail message, or text box, you'll see a blinking vertical line ( ) called the cursor or insertion point.It shows where the text that you type will begin.