打开或关闭 Microsoft Defender 防火墙 - Microsoft 支持
即使已开启其他防火墙，开启 Microsoft Defender 防火墙也很重要。 它保护你免遭未经授权的访问。 若要打开或关闭 Microsoft Defender 防火墙，请执行以下操作：
在 Microsoft Store 中更改所在国家或地区 - Microsoft 支持
如果在 Microsoft Store 中更改所在国家或地区，你在某个地区获取的内容可能无法在另一个地区使用。
Manage your subscription - Microsoft Support
Explore subscription benefits, browse training courses, learn how to secure your device, and more.
Applies To:
Outlook.com
Register your personal device on your work or school network
Next steps. After you register your personal device to your organization's network, you should be able to access most of your resources. If your organization wants you to join your work device, see Join your work device to your organization's network.
Sync files with OneDrive on macOS - Microsoft Support
Learn how to install OneDrive and sync your OneDrive files to your Mac OS X computer.
Applies To:
OneDrive for Business, SharePoint Server Subscription Edition, SharePoint Server 2019, SharePoint in Microsoft 365, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, OneDrive (work or school), OneDrive (work or school) operated by 21Vianet, OneDrive for Mac, SharePoint admin center, SharePoint in Microsoft 365 Small Business, SharePoint operated by 21Vianet
Change your status in Microsoft Teams - Microsoft Support
Learn how to change your status or availability in Microsoft Teams, set a duration for your status, and see who's online.
Applies To:
Microsoft Teams
Set up an authenticator app as a two-step verification method
Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.If you don't allow the camera, you can still set up the authenticator app as described in Manually add an account to the app.
Stay safe with a genuine Office license - Microsoft Support
After launching an Office app, you might receive a message that says Get genuine Office.. If you see this, we've determined that the Office product installed on your device isn't legitimate and you may be a victim of software counterfeiting.
Applies To:
Office 2019
更改 Office 产品密钥 - Microsoft 支持
如何更改产品密钥以修复拥有并安装一次性购买的多个 Office 副本时可能会出现的激活问题。
Applies To:
OneNote for Microsoft 365, Visio Plan 2, OneNote for Microsoft 365 for Mac, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2021 for Mac, OneNote 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2019 for Mac, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Office 2016
Set up auto-reply (out of office) - Microsoft Support
Try it! Microsoft 365 subscribers can set up automatic replies for when they are out-of-office or unavailable to respond to email. Select File > Automatic Replies.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016