Where to enter your Office product key - Microsoft Support
If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription.
适用于:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016, Microsoft 365 家庭版, Office 商业版
Microsoft 365 help & learning
Get Microsoft 365 support, help, and learning resources. Organize your life, expand your creativity, and protect what’s important with Microsoft 365.
适用于:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016, Microsoft 365 家庭版, Microsoft 365 Mac 版, 用于 Windows 的 Microsoft 365
Use the dark theme in Microsoft Edge - Microsoft Support
The dark theme changes the default bright background color in the new Microsoft Edge to a darker color, which is easier on the eyes in low-light environments or if you prefer less bright interfaces.
使用系统还原 - Microsoft 支持
使用系统还原. Windows 10. 当安装新应用、驱动程序或 Windows 更新以及当手动创建还原点时，会使用系统还原生成还原点。. 还原不会影响你的个人文件，但会删除生成还原点后所安装的应用、驱动程序和更新。. 若要回退到还原点：. 选择" 开始 "按钮，然后在任务 ...
激活 Office - Microsoft 支持
激活 Microsoft 365 或非订阅版本的 Office. 当启动未激活的 Microsoft 365 应用时，系统将提示登录到 Microsoft 365。. 请务必使用用于购买或订阅 Microsoft 365 的 Microsoft 帐户或工作或学校帐户进行登录。. 注意: 如果新设备上预安装了 Microsoft 365，请参阅 激活新 Windows 设备上 ...
适用于:
Microsoft 365 专属 Excel, Microsoft 365 专属 Word, Microsoft 365 专属 Outlook, Microsoft 365 专属 PowerPoint, Microsoft 365 专属 Access, OneNote for Microsoft 365, Microsoft 365 专属 Publisher, Visio 计划 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 家庭版, Office 商业版, Office.com, Project for Office 365
Video playback settings in Windows - Microsoft Support
For these apps, you can control video playback using the video playback settings in Windows 11. For example, you can have your PC process video to enhance it (depending on your PC’s hardware) or choose to play video at a lower resolution to help save network bandwidth.
Internet Explorer 下载 - Microsoft 支持
对 Internet Explorer 的支持已于 2022 年 6 月 15 日结束。 Internet Explorer 11 已通过某些版本的 Microsoft Edge 更新永久禁用Windows 10。 获取 Microsoft 推荐的最新 Internet 浏览器。
Set up an authenticator app as a two-step verification method
You can set up an authenticator app to send a notification to your mobile device or to send you a verification code as your security verification method. You aren't required to use the Microsoft Authenticator app, and you can select a different app during the set up process. However, this article uses the Microsoft Authenticator app.
Personalize your lock screen - Microsoft Support
Stay informed and efficient with dynamic updates that bring weather, finance, sports, traffic, and app notifications right to your lock screen. Imagine getting ready for your day with a glance at the forecast, or staying ahead of the stock market changes, all without unlocking your device. It’s the perfect blend of personalization and practicality, tailored just for you.
What is the Microsoft Groove Music app? - Microsoft Support
Microsoft Groove Music is brand new for Windows 10. Add your MP3s to OneDrive and you can use the Groove Music app to play your songs on other devices, too—PCs, Windows Phone, and Xbox—for free.