“Microsoft 手机连接”和“连接至 Windows” 简介 自从我们在 2018 年 10 月首次宣布“你的手机”和“你的手机助手”应用以来，这是一个令人兴奋的旅程。

Learn how to protect your Windows devices and personal data from viruses, malware, or malicious attacks.

单击“ 开始 ”>“ 设置单元格格式 ”对话框启动器，或者按 Ctrl+Shift+F。. 在“ 填充 ”选项卡上，在“ 背景色 ”下方选择所需的颜色。. 要使用包含两种颜色的图案，请在“ 图案颜色 ”框中选择一种颜色，然后在“ 图案样式 ”框中选择一个图案。. 要使用 ...

Select your version of Microsoft 365 below to learn how to activate Microsoft 365. Activate Microsoft 365 or a non-subscription version of Office. Activate Office that's pre-installed on a new Windows device. Activate an Office purchase or offer that's included on a new Windows device. Activate Office from Microsoft Workplace Discount Program.

撤消操作 若要撤消操作，请按键盘上的 Ctrl+Z ，或在快速访问工具栏上选择“ 撤消 ”。 如果要撤消多个步骤，可以重复按撤消 (或 Ctrl+Z) 。

If your computer is showing a black or blank screen in Windows, these troubleshooting tips could help get your system back up and running.

A workbook is a file that contains one or more worksheets to help you organize data. You can create a new workbook from a blank workbook or a template. By default, a new workbook contains three worksheets, but you can change the number of worksheets that you want a new workbook to contain. You can also add and remove worksheets as needed.

Set up an authenticator app as a two-step verification method You can set up an authenticator app to send a notification to your mobile device or to send you a verification code as your security verification method. You aren't required to use the Microsoft Authenticator app, and you can select a different app during the set up process. However, this article uses the Microsoft Authenticator app.

Learn how to change the settings that enable or disable macros in Excel, and more. Change the macro security settings to control which macros run when you open a workbook.

若要手动从Windows 11 家庭版升级到Windows 11 专业版，请先检查运行的版本和激活状态：. 选择“ 开始 ”>“ 设置 ”>“ 系统 ”>“ 激活 ”。. 在“ 激活 ”页面顶部，可以看到你的版本：家庭版或专业版。. 你还将在“ 激活状态 ”下看到是否已激活。. 打开激活 ...