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.
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
Using the Windows Activation troubleshooter - Microsoft Support
To activate using your digital license, you'll need to upgrade to Windows 11 Pro: Save your work and close any open apps.
Find all your apps and programs - Microsoft Support
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).
Office - Microsoft
注意: 如果你有多个一次性购买的 Office,并且安装 Office 后在激活时遇到问题,请参阅更改 Office 产品密钥。 如果你遵循软件许可条款中的转移条款,你可以将 Office 移动到另一台计算机,但是必须通过电话将其激活,然后从原来的计算机上卸载 Office。
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016
Touch gestures for Windows - Microsoft Support
Action. Gestures. Select an item. Tap the screen Scroll. Place two fingers on the screen and slide horizontally or vertically. Zoom in or out. Place two fingers on the screen and pinch in or stretch out
Stay protected with Windows Security - Microsoft Support
Tip: If you're a Microsoft 365 Family or Personal subscriber you get Microsoft Defender, our advanced security software for Windows, Mac, iOS, and Android, as part of your subscription.Learn more at Getting started with Microsoft Defender.
Use Immersive Reader in Microsoft Edge - Microsoft Support
Reading preferences in Immersive Reader In Reading preferences, you can turn on tools like Line focus to focus on reading one, three or five lines at a time, Picture dictionary to see a visual representation of a word, or Translate to change the language of the text.. Find these tools in Reading preferences on the Immersive Reader toolbar. Line focus: Line focus narrows the focus of your ...
Applies To: Microsoft Edge
Fix problems that block programs from being installed or removed ...
The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.
KB4023057: Update Health ToolsWindows Update Service components
Important: If your device is out of support, it is no longer receiving security updates from Microsoft and may become more vulnerable to security risks and viruses.Therefore, we strongly recommend that you update to the latest version of Windows. Each version of Windows is supported for 18 months.