When critical Windows system files are missing or corrupted, your operating system may begin to malfunction. Common symptoms include Windows features not working properly, system errors, or Windows becoming unresponsive or freezing.

Repair or reset your apps: See Repair or Remove programs in Windows 10. Reinstall your apps: In Microsoft Store, select See more > My Library. Select the app you want to reinstall, and then select Install.

Get Help has troubleshooters you can run for many common scenarios. These often help resolve issues without the need to contact support. If a troubleshooter is available for your issue, select Start to run that troubleshooter.

This article explains how to repair apps and programs in Windows 11 and use Settings to fix common app issues without reinstalling. 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.

First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open. The troubleshooter provides steps for you to follow. If a program isn't listed in the uninstall options, you'll be asked for that program's product code.

Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.

Learn how to get older apps or programs to run on Windows 10 or Windows 11 by adjusting compatibility settings.

Get help when you experience performance issues with games on your PC.

Real-time protection is a feature in the Windows Security app that continuously monitors your device for potential threats such as viruses, malware, and spyware. This feature ensures that your device is actively protected by scanning files and programs as they are accessed or executed.

Startup Repair is a Windows recovery tool that can fix certain system problems that might prevent Windows from starting. It scans your computer for the problem and then tries to fix it so your computer can start correctly.