Windows Server 2019 must use an anti-virus program.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
high	V-205850	SRG-OS-000480-GPOS-00227	WN19-00-000110	SV-205850r991589_rule	2025-02-25	3

Description
Malicious software can establish a base on individual desktops and servers. Employing an automated mechanism to detect this type of software will aid in elimination of the software from the operating system.

ℹ️ Check
Verify an anti-virus solution is installed on the system. The anti-virus solution may be bundled with an approved host-based security solution. If there is no anti-virus solution installed on the system, this is a finding. Verify if Windows Defender is in use or enabled: Open "PowerShell". Enter “get-service \| where {$_.DisplayName -Like "Defender"} \| Select Status,DisplayName” Verify if third-party anti-virus is in use or enabled: Open "PowerShell". Enter "get-service \| where {$_.DisplayName -Like "mcafee"} \| Select Status,DisplayName” Enter "get-service \| where {$_.DisplayName -Like "symantec"} \| Select Status,DisplayName”

ℹ️ Check

Verify an anti-virus solution is installed on the system. The anti-virus solution may be bundled with an approved host-based security solution. If there is no anti-virus solution installed on the system, this is a finding. Verify if Windows Defender is in use or enabled: Open "PowerShell". Enter “get-service | where {$_.DisplayName -Like "*Defender*"} | Select Status,DisplayName” Verify if third-party anti-virus is in use or enabled: Open "PowerShell". Enter "get-service | where {$_.DisplayName -Like "*mcafee*"} | Select Status,DisplayName” Enter "get-service | where {$_.DisplayName -Like "*symantec*"} | Select Status,DisplayName”

✔️ Fix
If no anti-virus software is in use, install Windows Defender or third-party anti-virus. Open "PowerShell". Enter "Install-WindowsFeature -Name Windows-Defender”. For third-party anti-virus, install per anti-virus instructions and disable Windows Defender. Open "PowerShell". Enter "Uninstall-WindowsFeature -Name Windows-Defender”.