Fix problems that block programs from being installed or removed
Block you from uninstalling a program through Add or Remove Programs (or Programs and Features) in Control Panel. If you're trying to remove malware, you can use Windows Security (or another antivirus tool), or you can use the Windows Malicious Software Removal tool.
Codecs in Media Player - Microsoft Support
Codecs allow you to play different formats of audio and video files. Media Player supports a wide variety of codecs. Most are included out of the box; some additional codecs can be installed from the Microsoft Store. Windows includes codecs that allow Media Player to play the following formats out of the box:
Use the System File Checker tool to repair missing or corrupted system ...
To resolve this problem, perform the System File Checker scan in safe mode. Make sure that the PendingDeletes and PendingRenames folders exist under %WinDir%\WinSxS\Temp. The %WinDir% placeholder represents the Windows operating system folder, such as, C:\Windows. Windows Resource Protection found corrupt files and successfully repaired them.
System Restore - Microsoft Support
With System Restore you can revert your PC's state to a previous point in time. This can be particularly useful when troubleshooting issues caused by recent changes, such as software installations, driver updates, or system settings modifications.
Repair an Office application - Microsoft Support
Right-click the Start button (lower-left corner) and select Apps and Features on the pop-up menu. Select the Microsoft Office product you want to repair and select Modify. Note: This will repair the entire Office suite even if it's just one application you want to repair such as Word or Excel.
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 2024, Word 2024, Outlook 2024, PowerPoint 2024, Access 2024, OneNote 2024, Project Professional 2024, Project Standard 2024, Visio Professional 2024, Visio Standard 2024, Office 2024, 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, Microsoft Office, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
How to install programs from online sources on Windows
There are two ways to get apps from Microsoft Store: Select Start , and select Microsoft Store. From the taskbar, select the Microsoft Store icon.
Remove specific prevalent malware with Windows Malicious Software ...
Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see Covered malware families). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.
使用系统文件检查器工具修复丢失或损坏的系统文件 - Microsoft 支持
当关键的 Windows 系统文件丢失或损坏时,某些 Windows 功能可能会停止正常工作,或者 Windows 可能会完全停止响应。 如果发生这种情况,可以使用部署映像服务和管理工具 (DISM) 和系统文件检查器工具 (SFC) 扫描系统文件并还原任何损坏或丢失的文件。 DISM 提供修复损坏的文件所需的文件。 应在运行系统文件检查器之前运行 DISM。 为此: 打开提升的命令提示符。 在 “搜索 ”框中键入 cmd。 在搜索结果中,右键单击“ 命令提示符 ”,然后选择“ 以管理员身份运行 ”。 如果系统提示确认或管理员密码,请键入密码,或单击“ 允许 ”。 在 “命令提示符” 窗口中,键入以下命令,然后按 Enter。 完成命令操作可能需要几分钟时间。
Windows Recovery Environment - Microsoft Support
Windows Recovery Environment (Windows RE) is a set of tools included with Windows that can help you troubleshoot and fix common problems with your computer. If your PC is having trouble starting up, Windows RE can automatically start and try to repair the issue. Windows RE is also a starting point for various tools for manual system recovery.
Risolvere i problemi che impediscono l'installazione o la rimozione dei ...
Lo strumento di risoluzione dei problemi di installazione e disinstallazione delle applicazioni consente di correggere automaticamente i problemi quando non riesci a installare o rimuovere programmi.