注意: 如果知道密码，但只想更改密码，请转到“account.microsoft.com 安全”选项卡，然后选择“更改我的密码”。. 如果知道用户名和密码但已停止工作，请阅读我的用户名和密码已停止工作。

Windows devices may get new functionality at different times as Microsoft delivers non-security updates, fixes, improvements, and enhancements via several servicing technologies—including controlled feature rollout (CFR).. Windows will let you know if you need to restart your device to complete an update, and you can choose a time that works best for you to complete that update.

Learn how to find your Windows product key for activation or when to use a digital license instead.

To turn off your PC in Windows 10, select the Start button, select the Power button, and then select Shut down.. I'm having trouble opening the Start menu

Learn how to open and run DxDiag.exe on Windows to collect device information and troubleshoot DirectX sound and video issues.

In the Windows emoji picker, you can either scroll through the list, use the category icons at the top or bottom of the emoji picker, or type a keyword to search for the emoji you want.

Windows 8.1 Windows 8.1 Enterprise Windows 8.1 Pro Windows 8 Windows 8 Enterprise Windows 8 Pro Windows RT Windows 7 Enterprise Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional Windows 7 Starter Windows 7 Ultimate Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Enterprise Windows Server 2008 R2 for Itanium-Based Systems Windows Server 2008 R2 Standard Windows Vista ...

若要清除 Microsoft Edge 浏览数据，请首先确定是只在当前使用的设备上删除数据，还是在所有同步设备上删除数据。 若仅要在当前使用的设备上清除浏览数据，请确保同步已关闭。 如果要清除所有同步设备上的浏览数据，请确保已登录并启用同步。

You can always ask an expert in the Excel Tech Community or get support in Communities. See Also. Split panes to lock rows or columns in separate worksheet areas. Overview of formulas in Excel. How to avoid broken formulas. Find and correct errors in formulas. Keyboard shortcuts in Excel. Excel functions (alphabetical) Excel functions (by category)

After you create your drop-down list, make sure it works the way you want. For example, you might want to check to see if Change the column width and row height to show all your entries.. If the list of entries for your drop-down list is on another worksheet and you want to prevent users from seeing it or making changes, consider hiding and protecting that worksheet.