在电脑或 Mac 上下载并安装或重新安装 Microsoft 365 或 Office 2021 - Microsoft 支持
准备好安装了吗？ 在开始之前，请确保电脑或 Mac 满足 系统要求。. 如果你已兑换产品密钥，只需重新安装应用，或者知道你已通过工作或学校分配了许可证，则可以跳到登录部分 ，下载并安装 Microsoft 365 或 Office。 但是，如果是 首次 安装 Microsoft 365 或 Office，可能需要先执行一些步骤。
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin, Office.com
Troubleshoot Outlook email setup - Microsoft Support
If you try to add an IMAP account to Outlook, for example a Gmail account, Apple account, Yahoo account, or an account from your local ISP, and you're not prompted to enter your password, use the following steps to work around the problem.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Microsoft 365 admin
Use the Calculator in Windows - Microsoft Support
The Calculator app for Windows is a touch-friendly version of the desktop calculator in previous versions of Windows. You can open multiple calculators at the same time in resizable windows on the desktop and switch between Standard, Scientific, Graphing, Programmer, Date calculation, and Converter modes.. To get started, select the Start button, and then select Calculator in the list of apps.
Form controls - Microsoft Support
In the Cell link box, enter a cell reference that contains the current state of the option button.. The linked cell returns the number of the selected option button in the group of options. Use the same linked cell for all options in a group.
Applies To:
Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
PowerPoint for Windows training - Microsoft Support
Training: Watch and learn how to use PowerPoint in Windows. Explore PowerPoint training guides, articles, and how-to videos.
Applies To:
PowerPoint for Microsoft 365, PowerPoint 2021, PowerPoint 2019, PowerPoint 2016, Office for business
Find and remove duplicates - Microsoft Support
How to find and remove duplicates in Excel. Filter for unique values in large or small datasets to clean up your worksheets and workbooks.
Applies To:
Excel for Microsoft 365, Excel 2021, Excel 2019, Excel 2016
Reduce the file size of your PowerPoint presentations
Delete image editing data and lower default resolution. By default, when you edit an image, the data from the original is retained (to ensure the image can be restored).
Applies To:
PowerPoint for Microsoft 365, PowerPoint 2021, PowerPoint 2019, PowerPoint 2016
Format text as superscript or subscript - Microsoft Support
For superscript, press Ctrl, Shift, and the Plus sign (+) at the same time.. For subscript, press Ctrl and the Equal sign (=) at the same time.
Applies To:
PowerPoint for Microsoft 365, PowerPoint for Microsoft 365 for Mac, PowerPoint for the web, PowerPoint 2021, PowerPoint 2021 for Mac, PowerPoint 2019, PowerPoint 2019 for Mac, PowerPoint 2016
Come accedere a Hotmail - Supporto tecnico Microsoft
Per ottenere supporto in Outlook.com, fare clic qui oppure selezionare Guida sulla barra dei menu e immettere la query. Se l'assistenza self-service non risolve il problema, scorrere verso il basso fino a Serve ulteriore assistenza? e selezionare Sì.. Per contattare Microsoft in Outlook.com è necessario eseguire l'accesso.
Applies To:
Outlook.com
Fix problems with the Start menu - Microsoft Support
Sign out of your account and then sign in to your new account. If everything is fixed, move your personal data and files to the new account. To move your personal files from your old account to your new account, try opening File Explorer, expanding This PC > OSDisk (C:), and looking in the Users folder, where you should see folders for both accounts.