Should you wish to explore alternatives to the already installed or available Microsoft antimalware software on your Windows PC, the reputable security companies listed below provide consumer security software that is compatible with Windows.

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 malicious software has modified (infected) files on your computer, the tool prompts you to remove the malicious software from those files. If the malicious software modified your browser settings, your homepage may be changed automatically to a page that gives you directions on how to restore these settings.

You should download and install programs only from trusted publishers and retail websites. In your web browser, select the link to the program. Select Save or Save as to download the program. Most antivirus programs like Windows Defender will scan the program for viruses during download.

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.

Discusses how to remove viruses, spyware, rogue software, or malware using Microsoft Security Essentials, Microsoft Safety Scanner and Microsoft Defender Offline.

Use an anti-malware app - Installing an anti-malware app and keeping it up to date can help defend your PC against viruses and other malware (malicious software). Microsoft Defender is free anti-malware software included with Windows, and it's kept updated automatically through Windows Update.

This article describes antimalware update package for Microsoft Defender in the OS installation images (WIM and VHD files). This feature supports the following OS installation images: Windows 11. Windows 10 (Enterprise, Pro, and Home editions) Windows Server 2022. Windows Server 2019.

Download Microsoft Defender on your devices either by: Scanning the following QR code. Searching for Microsoft Defender in your app store. Sharing with your devices, the following link: Copy link. We encourage you to install Microsoft Defender on at least five devices per person.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.