Check to see if your Wi-Fi network uses Media Access Control (MAC) address filtering for security. If it does, you’ll need to add the MAC address for your PC to the access list on your router before you can connect. Select the Start button. Start typing cmd and right-click Command Prompt in the list.

获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。

If you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool. The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide.

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”。

Select the cell you want to combine first. Use commas to separate the cells you are combining and use quotation marks to add spaces, commas, or other text.

Select a location, and then pick an alignment style. Word automatically numbers every page, except designated title pages.

Need the full set of Excel features? Open your file in the Excel desktop app one of two ways, depending on what you see in your workbook: Select Open in Desktop App at the top of your workbook.If you don't see it, there should be a search bar along the top of your workbook.

在投影的电脑上，选择 “Windows 徽标键 + K ”，然后选择要连接到的电脑。 或者，可以在 Windows 搜索栏中搜索 “强制转换 ”，然后选择“ 连接到无线显示器”。在“显示设置”页上的“ 多个显示器”下，选择“ 连接到无线显示器”，然后选择“ 连接”。

Excel for Microsoft 365 Excel for Microsoft 365 for Mac Excel for the web Excel 2021 Excel 2021 for Mac Excel for iPad Excel for iPhone Excel for Android tablets Excel for Android phones More... Less. The FILTER function allows you to filter a range of data based on criteria you define. In the following example we used the formula =FILTER ...

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