激活 Office - Microsoft 支持
解决激活错误. 如果 Microsoft 365 无法激活，其最后会变为未授权，且 Microsoft 365 的所有编辑功能都会被禁用。 Microsoft 可能由于多种原因变为未授权。
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
将人员添加到你的家庭组 - Microsoft 支持
注意: 如果某人已是某个家庭组的一部分，则必须先 离开该组或从该组中删除，然后才能加入另一个组。 他们还可以 创建一个新的 Microsoft 帐户 以与新的家庭组相关联。. 了解Microsoft家庭安全特性和优势。
Applies To:
Microsoft Family Safety
June 11, 2024—KB5039294 (Monthly Rollup) - Microsoft Support
Windows 8.1 reached the end of support (EOS) on January 10, 2023, at which point technical assistance and software updates are no longer provided. If you have devices running Windows 8.1, we recommend upgrading them to a more current, in-service, and supported Windows release. If devices do not meet the technical requirements to run a more current release of Windows, we recommend that you ...
为 Windows 10 创建 ISO 文件 - Microsoft 支持
与以前版本的 Windows 不同的是，你需要使用媒体创建工具来创建用于安装 Windows 10 的 ISO 文件。 确保你有 Windows 10 安装许可证，然后按照以下步骤操作：
如何在 Microsoft 365 应用中查找和启用缺少的 Copilot 按钮
重要: Copilot 中的 Outlook 仅支持工作或学校帐户，以及使用 outlook.com、hotmail.com、live.com 和 msn.com 电子邮件地址的 Microsoft 帐户。 使用来自第三方电子邮件提供商（如 Gmail、Yahoo 或 iCloud）的帐户的任何 Microsoft 帐户仍然可以使用 Outlook，但无法访问 Copilot 中的 Outlook 功能。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, OneNote for Microsoft 365, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac
Optimizations for windowed games in Windows 11
Optimizations for windowed games improves gaming on your PC by using a new presentation model for DirectX 10 and DirectX 11 games that appear in a window or in a borderless window.
ある数値より大きい、または小さい数値の個数を求める - Microsoft サポート
countif を使用して、特定の条件を満たすセルの数をカウントします。 たとえば、レポートを準備していて、特定の値より大きいか小さい売上請求書の数をカウントする必要があります。
Applies To:
Excel for Microsoft 365, Excel 2021, Excel 2019, Excel 2016
Upload photos and files to OneDrive - Microsoft Support
You can save directly to OneDrive from Microsoft Office files (like Word docs and Excel worksheets), PDFs, and other documents. If your PC has a built-in camera, you can automatically save copies of the photos you take directly to OneDrive so you’ll always have a backup.
Applies To:
OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows
How do I open a protected message? - Microsoft Support
Protected messages allow the sender to set specific permissions on a message, such as Do Not Forward or Do Not Print. If you receive a protected email message sent to the work or school account you use with Microsoft 365 in Outlook or Outlook on the web, the message should open like any other message.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook on the web, New Outlook for Windows, Outlook for Android, Outlook for iOS
如果文件资源管理器不能打开或启动，进行修复 - Microsoft 支持
若要在Windows 10中打开文件资源管理器，请选择任务栏上的图标 ，按键盘上的 Windows 徽标键 + E，或选择用户图标) 正下方的“开始 > 文档 (”。. 如果无法打开文件资源管理器，下面是一些可以尝试的方法。