Basic tasks in Excel - Microsoft Support
In the Add-Ins dialog box, select the check boxes the add-ins that you want to use, and then click OK. If Excel displays a message that states it can't run this add-in and prompts you to install it, click Yes to install the add-ins. For more information about how to use add-ins, see Add or remove add-ins.
Applies To:
Excel for Microsoft 365, Excel 2021, Excel 2019, Excel 2016
Troubleshoot problems updating Windows - Microsoft Support
Important: Before trying any of the solutions below, make sure you back up your personal files. You can back up your Windows PC, or insert a USB drive and use File Explorer to drag and copy important files to the USB drive.If you’re signing into Windows with a Microsoft account, your system settings will be automatically restored after updating, once you’re connected to the internet.
Windows Update Troubleshooter - Microsoft Support
Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.
Add, turn off, or remove extensions in Microsoft Edge
Learn how to manage extensions in Microsoft Edge, including adding, disabling, or removing them as needed.
向幻灯片添加背景图片 - Microsoft 支持
可以使用图片作为一张或多张幻灯片的背景。 将图片添加到幻灯片后，可以调整其透明度。
Applies To:
PowerPoint for Microsoft 365, PowerPoint 2021, PowerPoint 2019, PowerPoint 2016
Download Internet Explorer 11 (Offline installer) - Microsoft Support
Microsoft Edge is the browser recommended by Microsoft. Support for Internet Explorer ended on June 15, 2022. If any site you visit needs Internet Explorer 11, you can reload it with Internet Explorer mode in Microsoft Edge.
Repair an Office application - Microsoft Support
The steps to access the repair tool vary depending on your operating system. Right-click the Start button (lower-left corner) and select Apps and Features on the pop-up menu.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, InfoPath 2013, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Microsoft 日语输入法 - Microsoft 支持
本页可帮助你了解如何使用 Microsoft 日语输入法，包括输入法功能和键盘快捷方式。
How do I use the Fn key/F Lock key/Alternate command keys?
Alternate command key. What it does. Help. Opens the Help system (if any) for the active window. Undo. Cancels the previous action. Redo. Cancels the previous Undo action.
Learn more about Surface Keyboards and Type Covers
With a Surface Keyboard or Type Cover, you have the flexibility to type comfortably and work your way anywhere. If you're not sure about the model of your device, see Find out which Surface model you have.. What's the difference between Surface Keyboard and Surface Type Cover?