Windows 允許新增多個用戶帳戶來使用相同的裝置，讓每個使用者都有自己的設定、檔和應用程式。 例如，家長可以擁有自己的帳戶，並擁有管理設定和安裝軟體的系統管理許可權，而子女可以擁有標準帳戶，並啟用家長監護來監控及限制其使用量。

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.

Notes: If someone is already part of a family group, they must leave or be removed from that group before joining another. They can also create a new Microsoft account to associate with a new family group. Explore Microsoft Family Safety features and benefits.

Contact Support For help with your Microsoft account and subscriptions, visit Account & Billing Help. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help.If you still need help, select Contact Support to be routed to the best support option. Admins

Para localizar un archivo digitalizado guardado anteriormente, selecciona Explorador de archivos en la barra de tareas y, a continuación, selecciona la ubicación que hayas elegido para guardar los archivos digitalizados.. Si ninguna de estas instrucciones resuelve el problema del escáner, podría haber un problema con el propio escáner.

檢查您的版本 DirectX 是許多 Windows 遊戲不可缺少的多媒體技術套件。 如果您的電腦未安裝正確版本的 DirectX (產品方塊會告知您所需的版本)，您的遊戲可能無法正常運作。

本文介绍了启用了 Windows 8.1、 Windows RT 8.1、 Windows Server 2012 R2、 Windows 8，Windows RT，Windows Server 2012，Windows 7 和 Windows Server 2008 R2 中的根证书的 Windows 程序的紧急更新的更新。 应用此更新之前，请参阅更多有关此更新，请查看本文中的系统必备组件。 ...

Microsoft .NET Framework 4.8.1 is a highly compatible and in-place update to .NET Framework 4.8. It includes native support for the Arm64 architecture (Windows 11+), accessibility improvements as well as other improvements.

To find downloads on your PC: Select File Explorer from the taskbar, or press the Windows logo key + E.

Designed by media lovers for media lovers. Windows Media Player 12—available as part of Windows 7, Windows 8.1, and Windows 10*—plays more music and video than ever, including Flip Video and unprotected songs from your iTunes library!