Enhanced stability for Storage Spaces Direct (S2D) and Storage Replica, which were marquee features of this version. 2. The Core Features of Windows Server 2016
Windows Server 2016 refers to a specific distribution of the operating system that includes the cumulative updates released through March 2017 . While the build itself was finalized in March (KB4016635), it is frequently found in ISO releases from April 2017 that pre-integrate these quality and security fixes. Build Overview Release Date: March 22, 2017 (via KB4016635 ). Base Version: Windows Server 2016 (Version 1607).
Minimum 32 GB (additional space required for GUI and RAM paging) . Network: Gigabit (10/100/1000baseT) Ethernet adapter . ⚠️ Important Lifecycle Note (2021 context)
After installing the update, you can verify the build number using a few standard methods:
: Patches for vulnerabilities in Internet Explorer and Microsoft Edge components used by the OS. windows server 2016 build 14393970 enus april 2017 2021
Build 14393 is the foundation of Windows Server 2016 (version 1607). The suffix .3970 identifies a specific cumulative update—officially labeled for April 2017. This update was crucial because it came nearly eight months after the general availability of Windows Server 2016. By April 2017, early adopters had reported bugs in Failover Clustering, Hyper-V live migration, and Remote Desktop Services. Build 14393.3970 addressed many of these, improving reliability for production environments.
Although Build 14393.970 (en-US) of Windows Server 2016 is no longer fully supported in 2021, it remains a widely used build in many organizations. Many organizations have been slow to migrate to newer versions of Windows Server, and as a result, this build remains in use.
As is standard for cumulative updates, KB4016635 contained only these quality improvements and did not introduce any new operating system features.
Build 14393 is the foundational RTM (Release to Manufacturing) build of Windows Server 2016. However, in enterprise environments, the "April 2017" update (often referred to as Build 14393.970 or slightly later patches within that month) served as a "stabilized" deployment baseline. April 2017 Update Package: KB4015217 Enhanced stability for Storage Spaces Direct (S2D) and
: Security updates for Windows Graphics Component, Windows SMB Server, Internet Information Services (IIS), and Active Directory. 2. Operational Stability and Bug Fixes
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.
Fixed a bug causing unexpected account lockouts on domain-joined computers using Kerberos authentication .
To install this specific build from media, your hardware must meet these minimum Windows Server 2016 specifications : 1.4 GHz 64-bit. RAM: 512 MB (Server Core) or 2 GB (Desktop Experience). Disk Space: At least 32 GB. Network: Gigabit Ethernet adapter (1.0 Gbps). Support Lifecycle and Current Status While the build itself was finalized in March
or an "all-in-one" (AIO) installer created by third-party collectors (such as Generation2). These versions often bundle the original 2016 installation media with cumulative updates released through 2021 to ensure a more secure deployment out of the box. Key Technical Details Original Build: Windows Server 2016 was released in 2016 with base build Build 14393.970:
Windows Server 2016 fundamentally changed how administrators deployed local and cloud infrastructure. Build 14393 established several core technologies that remain industry standards. Hybrid Cloud Integration
For system administrators encountering this identifier, the path forward is clear:
