下载和安装 通常 Skype for Business 是随 Microsoft 365 一起安装的。 如果已安装 Microsoft 365，但未安装 Skype for Business 且需要安装它，请参阅： 在 Windows 上安装 Skype for Business

Method. Used for. Authenticator app. Two-factor verification and password reset authentication. Text messages. Two-factor verification and password reset authentication.

Turn on your TV or projector. If you're using a Miracast dongle or adapter, make sure it's plugged in to the display. On your PC, make sure Wi-Fi is turned on. On the taskbar, select the action center icon > Connect > pick your display. Follow any additional instructions on the screen. Otherwise, you're done.

Add or subtract months from a date with the EDATE function. You can use the EDATE function to quickly add or subtract months from a date.. The EDATE function requires two arguments: the start date and the number of months that you want to add or subtract. To subtract months, enter a negative number as the second argument.

To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? and select Yes.. To contact us in Outlook.com, you'll need to sign in.

Set up your TV, monitor, or projector. Make sure you have the correct cable(s) and adapter(s) for your devices. When you're ready, here's how to set it up: Plug one end of the video cable into the port on the external screen. Make sure that your TV, monitor, or projector is turned on.

Select Save or Save as to download the program. Most antivirus programs like Windows Defender will scan the program for viruses during download.

如何在 Excel 中锁定单元格以保护数据。 还可以解锁单元格区域并授予他人编辑权限。 清除此复选框 防止用户执行的操作 选定锁定单元格 将指针移向选中了“锁定”复选框（在“设置单元格格式”对话框的“保护”选项卡上）的单元格。默认情况下，允许用户选择锁定的单元格。

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.

Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.