Learn how to locate your Microsoft Office product key, which allows you to activate and use your Office products without requiring a Microsoft account.

撤消操作. 按 + z，或选择功能区左上角的“撤消 ”，直到解决问题。. 无法撤消某些操作，例如在“ 文件 ”菜单上选择命令或保存文件。 如果无法撤消某操作，“撤消”命令将更改为“无法撤消”。 若要同时撤消多个操作，请选择“ 撤消”旁边的箭头，在列表中选择要撤消的操作，然后选择该 ...

在“ 幻灯片母版 ”选项卡上，单击“ 字体 ”下拉菜单。 选择要用于演示文稿中所有幻灯片的字体。 无需从菜单上的预定义字体对中进行选择;选择菜单底部的“ 自定义字体 ”，选择自己的字体。

Looking for a long-lost app or program? There are several ways you can find what you need. Select Start , and then scroll through the alphabetical list on the left (if your Start screen is set to show as full screen, select All apps, and then scroll through the list).

Note: If you signed in with a Microsoft account such as an Outlook.com, Hotmail, Live, or MSN email account instead of your work or school account, sign out, and then sign in again using the correct account. Not sure which account you're signed in with? Select Account manager in the Outlook navigation header. If you're not signed in with the account you want, select Sign out and start the ...

Important: Copilot in Outlook only supports work or school accounts, and Microsoft accounts using outlook.com, hotmail.com, live.com, and msn.com email addresses at this time. Any Microsoft account using an account from a third-party email provider, such as a Gmail, Yahoo, or iCloud, can still use Outlook, but won't have access to the Copilot features in Outlook.

Microsoft 365 is a subscription that comes with premium apps like Word, Excel, PowerPoint, OneNote, Outlook, Publisher, and Access (Publisher and Access available on PC only). The apps can be installed on multiple devices, including PCs, Macs, iPads, iPhones, Android tablets, and Android phones. Microsoft 365 also comes with services like 1 TB of OneDrive storage, 60 Skype minutes per month ...

Download our Formulas tutorial workbook. We've put together a Get started with Formulas workbook that you can download. If you’re new to Excel, or even if you have some experience with it, you can walk through Excel’s most common formulas in this tour.

在“ 插入对象 ”框中，选择“ 从文件创建”，然后输入 pdf 文件位置;或选择“浏览”，找到 pdf 文件，然后选择“ 确定”。 这使得 pdf 文件成为演示文稿文件的一部分。 此方法会降低 pdf 文件的质量，但在“普通”视图中查看或编辑时，可以通过双击图像来打开完整的 pdf 文件。

Download information. The following files are available for download from the .NET Download site: Download the Microsoft .NET Framework 4.8 offline installer package now.