Windows Server 2016 Build 14393970 Enus April 2017 2021 Link

Organizations should regularly review and update their server infrastructure to ensure they are on supported builds, can receive timely security updates, and are protected against vulnerabilities.

For comprehensive support and to ensure security, consider bringing your server up to date with the latest cumulative updates and evaluating migration strategies to more recent versions of Windows Server if necessary. windows server 2016 build 14393970 enus april 2017 2021