Systems must be maintained at a supported servicing level.

From Windows Server 2016 Security Technical Implementation Guide

Associated with: CCI-000366

SV-87891r1_rule Systems must be maintained at a supported servicing level.

Vulnerability discussion

Systems at unsupported servicing levels will not receive security updates for new vulnerabilities, which leave them subject to exploitation. Systems must be maintained at a servicing level supported by the vendor with new security updates.

Check content

Open "Command Prompt". Enter "winver.exe". If the "About Windows" dialog box does not display "Microsoft Windows Server Version 1607 (Build 14393.xxx)" or greater, this is a finding. Preview versions must not be used in a production environment.

Fix text

Update the system to a Version 1607 (Build 14393.xxx) or greater.

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