若要在 Windows 11 中检查激活状态，请选择“开始 ”按钮，然后选择“设置 > 系统 ” ，然后选择“激活 ”。 。 激活状态将在“激活”旁边列出。 在“设置”中检查激活状态. 你将在“激活”页面上看到以下一条激活状态消息：

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。

Learn how to install the latest version of DirectX to enable games and multimedia applications on your system.

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

If you can’t locate a lost file from your backup, then you can use Windows File Recovery, which is a command line app available from the Microsoft Store.Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin.

Important: Steps may be different between new and classic Outlook for Windows. To determine which version of Outlook you're using, look for File on the ribbon.If there's no File option, follow the steps under the New Outlook tab. If the File option appears, select the tab for Classic Outlook.

Get from External Data Source. Get from Data Model. Use this option if your workbook contains a Data Model, and you want to create a PivotTable from multiple tables, enhance the PivotTable with custom measures, or are working with very large datasets.. Get from Power BI. Use this option if your organization uses Power BI and you want to discover and connect to endorsed cloud datasets you have ...

If you forgot your PIN and need to reset it, you can do so from the Windows sign-in screen. Look below the PIN text box: If you see I forgot my PIN , select it and follow the instructions to reset your PIN.If there are multiple accounts on the device, choose the one you need to reset.

Note: The TEXT function converts numbers to text, which may make it difficult to reference in later calculations.It’s best to keep your original value in one cell, and then use the TEXT function in another cell. Then, if you need to build other formulas, always reference the original value and not the TEXT function result.

To keep an area of a worksheet visible while you scroll to another area of the worksheet, go to the View tab, where you can Freeze Panes to lock specific rows and columns in place, or you can Split panes to create separate windows of the same worksheet.