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Get help and training for Office products, such as Word, Excel, PowerPoint, and Outlook. Learn tips and tricks, troubleshoot issues, and access online resources.

检查你的版本. DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX（产品包装盒上应标有所需的版本），游戏可能无法正常运行。

如果应用已打开，请在任务栏上找到应用的图标按钮，长按此按钮，然后向上滑动，直到出现“应用列表”。 如果你使用的是鼠标，请在任务栏上找到应用图标按钮，右键单击此按钮，然后选择“固定到任务栏”。

A guide to help you identify and access your Microsoft account. How to check if your email is a Microsoft account? Go to the Microsoft account sign-in page at https://account.microsoft.com and enter your email address.

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。

Cookies are small pieces of data stored on your device by websites you visit. They serve various purposes, such as remembering login credentials, site preferences, and tracking user behavior.

Look in the Surface app. The easiest way to find which Surface model you have is to use the Surface app. It shows the model name of your Surface device and each Surface accessory.

To be able to send bulk email via mail merge, you must already have installed a MAPI-compatible email program such as Outlook or Gmail. The following process assumes that you already have the message you intend to send created and open in Microsoft Word.

Show the Developer tab. If the developer tab isn't already visible, see Show the Developer tab.. Make your list. Type the list.