Hello there,
Microsoft Defender is a good enough option for basic antivirus protection. It has a very strong firewall and a good number of features for the program and device security.
Microsoft’s Windows Defender provides decent cloud-based malware detection 100% free of charge
Enable and configure Microsoft Defender Antivirus https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/configure-real-time-protection-microsoft-defender-antivirus?view=o365-worldwide
Hope this resolves your Query !!
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