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.

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.

Provides links to the uninstall tools and directions for many security programs.

After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, but we recommend moving to Windows 11. Learn more. Note: Use these steps for Windows programs.

The installation file is typically named Autorun.exe or Setup.exe, but this may vary. If you're not sure, check the Readme file in the folder for instructions about how to run the installation.

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. Available Windows troubleshooters Get Help has troubleshooters, or diagnostic tests, that can check your system configuration for anything that might be causing issues ...

This article explains how to repair apps and programs in Windows 10 and use Settings to fix common app issues without reinstalling. Select Start > Settings > Apps > Apps & features. Apps & features in Settings Select the app you want to fix. Select Advanced options under the name of the app (some apps don't have this option). In the page that opens, select Repair if it's available. If it isn't ...

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.

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.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.