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 if you have a Microsoft 365 Personal, Family, or Premium subscription. It's kept updated automatically through Windows Update. There are also anti-malware ...
With Microsoft Defender Antivirus now included in the Windows Security app, you can review, compare, and perform common tasks.
Using anti-malware on your device 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.
In Microsoft Defender, anti-phishing policies are available on the Email & Collaboration > Policies & rules > Threat policies > Anti-phishing page. While a default anti-phishing policy automatically applies to all recipients, you can also create custom policies for specific users, groups, or domains.
To learn more about anti-malware see Getting started with anti-malware in Microsoft Defender. Tip: Stay up-to-date and install the latest updates on all your devices and apps (especially browsers) to help prevent malware.
Learn how to manage, configure, and use Microsoft Defender Antivirus, built-in anti-malware and antivirus protection.
Admins can learn about anti-malware email protection and anti-malware policies that protect against viruses, spyware, and ransomware in Microsoft 365.