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Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
From the Microsoft 365 home page select Install apps. Select Install (or depending on your version, Install apps> ). From the home page select Install apps (If you set a different start page, go to aka.ms/office-install .) For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn/account.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Troubleshooting verification code issues - Microsoft Support
There are a number of possible explanations for why verification codes don't always arrive. Read through the list of the most common causes, and see if any of them apply to you, or use our troubleshooter to help guide you.
Applies To: Microsoft account dashboard
Uninstall or remove apps and programs in Windows
There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.
Fix Bluetooth problems in Windows - Microsoft Support
If you run into problems trying to connect to a Bluetooth device, here are some troubleshooting steps to try. Note: For general info about how to connect a Bluetooth device to your PC, see Pair a Bluetooth device in Windows.
Microsoft Support
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.
Windows help and learning
Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.
Use voice typing to talk instead of type on your PC
How to start voice typing. To use voice typing, you'll need to be connected to the internet, have a working microphone, and have your cursor in a text box. Once you turn on voice typing, it will start listening automatically. Wait for the "Listening..." alert before you start speaking.
Change the email address or phone number for your Microsoft account
Follow these steps to reset your Microsoft account password. Follow the steps on this page to change the Microsoft account email address or phone number (also known as your account alias or username) that you use to sign in.
全球客户服务电话号码 - Microsoft 支持
全球客户服务电话号码. 要查找你所在国家/地区的客服电话号码,请单击一个地区并查找你所在的国家/地区。. 注意: Surface 设备的支持案例只能 在线 启动。. 本页提供 Microsoft 客服的电话号码。.
Get help with your Microsoft account - Microsoft Support
Help with a work or school account password. I need to talk to a customer support agent. Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.
Applies To: Microsoft account dashboard