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Use the System File Checker tool to repair missing or corrupted system ...
To repair the corrupted files manually, view details of the System File Checker process to find the corrupted file, and then manually replace the corrupted file with a known good copy of the file. Windows 8.1 or Windows 8. Windows 10, Windows 7, or Windows Vista. More Information.
Uninstall or remove apps and programs in Windows
Press and hold (or right-click) on the program you want to remove and select Uninstall or Uninstall / Change. Then follow the directions on the screen. Need more help? If you can't find an app or program, try the tips in See all your apps in Windows 10 and Program is not listed in add/remove programs after installation.
How to open Registry Editor in Windows 10 - Microsoft Support
There are two ways to open Registry Editor in Windows 10: In the search box on the taskbar, type regedit, then select Registry Editor (Desktop app) from the results. Right-click Start , then select Run. Type regedit in the Open: box, and then select OK.
Repair an Office application - Microsoft Support
Windows 10 Windows 11. 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. Select the Microsoft Office product you want to repair and select Modify.
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
Fix problems that block programs from being installed or removed ...
Install a printer in Windows 10. Fix printer problems in Windows 7 and Windows 8.1. The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.
Repair apps and programs in Windows - Microsoft Support
Windows 11 Windows 10. You can repair some apps and programs if they're not running correctly. Note that you won't see repair, change, or modify options for all apps and programs. Repair options from the Settings page. Select Start > Settings > Apps > Apps & features. Apps & features in Settings.
Description of the Windows Registry Checker Tool (Scanreg.exe)
When you start your computer successfully, the Windows Registry Checker tool (Scanreg.exe) creates a backup of system files and registry configuration information (including user account information, protocol bindings, software program settings, and user preferences) once daily.
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.
How to use the PC Health Check app - Microsoft Support
How to use the PC Health Check app - Microsoft Support. Windows 11 Windows 10. PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems.
Troubleshooter for repairing Windows Update system files and settings
Troubleshooter for repairing Windows Update system files and settings - Microsoft Support. This article describes the problem addressed by the troubleshooter, what it does to mitigate them, and the conditions that can cause it to run. For more information about troubleshooting, see Keep your device running smoothly with recommended troubleshooting.