Remove malware from your Windows PC - Microsoft Support
Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC. Important: Before you use Microsoft Defender Offline, make sure to save any open files and close apps and programs. Open your Windows Security settings.
Applies To:
OneDrive (home or personal), OneDrive for Windows
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.
Turn off Defender antivirus protection in Windows Security
Follow these steps to temporarily turn off real-time Microsoft Defender antivirus protection in Windows Security. However, keep in mind that if you do, your device may be vulnerable to threats. Select Start and type "Windows Security" to search for that app.
Automatically fix Windows security issues - Microsoft Support
Windows 7 Windows 8.1 Windows 10. Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features. Select the Download button on this page.
Turn Windows Security on or off - Microsoft Support
Open Windows Security settings. Windows Security is pre-installed on Windows 10 and ready for you to use at any time.
Virus & threat protection in Windows Security - Microsoft Support
Select this link to choose from one of the following advanced scan options: Full scan. Scans every file and program on your device. Custom scan. Scans only files and folders that you select. Microsoft Defender Offline scan. Uses the latest definitions to scan your device for the latest threats.
Applies To:
Microsoft account dashboard
How to prevent and remove viruses and other malware
Windows 7. 2. Use the free Microsoft Safety Scanner. Microsoft offers a free online tool that scans and helps remove potential threats from your computer. To perform the scan, go to the Microsoft Safety Scanner website. 3. Use the Windows Malicious Software Removal Tool.
How to start a scan for viruses or malware in Microsoft Defender
Select Device details. Select Manage in Windows Security. Select Quick scan. Tips: If you want a deeper scan, instead of selecting Quick scan in step 3, select Scan options and choose the type of scan you want. For the most complete scan, run Microsoft Defender Offline. For more about that see Help protect my PC with Microsoft Defender Offline.
Applies To:
Microsoft Defender on Android, Microsoft Defender on Mac, Microsoft Defender on Windows
Getting started with anti-malware in Microsoft Defender
Microsoft Defender's real-time anti-malware protection runs whenever your device is on, keeping an eye out for malicious activity. Microsoft Defender will also run quick scans of your device on a daily basis, in case anything manages to elude the real-time protection.
Applies To:
Microsoft Defender on Android, Microsoft Defender on Mac, Microsoft Defender on Windows
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. It also fixes corrupted registry keys. 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.