如何更改 Microsoft 帐户上的出生日期 - Microsoft 支持
某些帐户是使用当前日期而不是出生日期创建的 - 这出人意料地很常见，我们正在努力防止帐户创建错误。 如果你是成年人，但帐户的出生日期不正确，则需要像更改孩子一样更改帐户信息。
Applies To:
Microsoft account dashboard
Office Help & Training
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Office Help & Training
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Office Help & Training
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Office Help & Training
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从 PC 卸载 Office - Microsoft 支持
提示: 如果将 Microsoft 365 应用作为套件的一部分安装，例如 Office 家庭和学生版 或 Microsoft 365，请搜索套件名称。对于独立应用，请按 Project 或 Visio 等应用名称进行搜索。 在大多数情况下，如果单个应用包含在 Microsoft 365 套件中，则无法将其卸载。
Applies To:
Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin, Office.com
How to play MP4 files in Windows 10 - Microsoft Support
Press and hold (or right-click) the MP4 file you want to play, select Open with, and then choose your preferred file player from the list of applications.
如何安装最新版本的 DirectX - Microsoft 支持
DirectX 9.0c 通过安装 DirectX 9.0c 最终用户运行时适用于 Windows XP 和 Windows Server 2003。. 某些应用程序和游戏需要 DirectX 9。 但是，你的计算机包含更新版本的 DirectX。 如果安装并运行需要 DirectX 9 的应用程序或游戏，你可能会收到错误消息“无法启动此程序，因为计算机中丢失 d3dx9_35.dll。
Office Help & Training
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