Get help with Windows activation errors - Microsoft Support
Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.
Set up the Microsoft Authenticator app as your verification method
Set up the Microsoft Authenticator app from the Security info page. Depending on your organization’s settings, you might be able to use an authentication app as one of your security info methods.
How to use two-step verification with your Microsoft account
Get answers to some basic questions about what two-step verification is, and how to set it up and use it to help keep your Microsoft account more secure.
Windows 登录选项和账户保护 - Microsoft 支持
Windows Hello. Windows Hello 可使你通过你的面部、虹膜、指纹或 PIN 登录到你的设备、应用、在线服务和网络。 即使你的 Windows 设备可以使用 Windows Hello 生物识别，也不必这么做。
Create an email signature from a template - Microsoft Support
Use a ready signature template from a gallery to create your email signature in Outlook.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
激活 Office - Microsoft 支持
如何激活预安装在新 Windows 10 计算机上的 Office 或使用新的产品密钥。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 for home, Office for business, Office.com, Project for Office 365
How to add an account in OneDrive - Microsoft Support
If you already have an account signed in to OneDrive and you want to add or remove another account, you’ll do that in OneDrive Settings.
Applies To:
OneDrive (work or school), OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows
Account help
Get help for the account you use with Microsoft and learn how to set up, protect and manage your services and subscriptions.
“Microsoft 手机连接”和“连接至 Windows” 简介 - Microsoft 支持
“你的手机”现在是“Microsoft 手机连接”！ 详细了解我们最近对电脑和 Android 移动应用的名称更改。
Protect yourself from phishing - Microsoft Support
Learn how to identify a phishing scam, designed to steal money via fake emails.