Windows Server 2016 Build 14393970 Enus April 2017 2021 -
Build 14393.970 addressed three publicly disclosed zero-day vulnerabilities and over two dozen remote code execution (RCE) flaws.
In the lifecycle of Microsoft’s server operating systems, few builds encapsulate the transition from traditional on-premises infrastructure to hybrid cloud readiness as clearly as Windows Server 2016 build 14393.3970. Released initially around April 2017 as a cumulative update for the RTM version (build 14393), this specific build number reappeared in enterprise patch management discussions in 2021 due to its long-term servicing channel (LTSC) nature. Far from being a random version string, “14393.3970” represents a snapshot of Microsoft’s disciplined update cadence, security hardening, and stability improvements during a period when server administrators were grappling with Nano Server, Containers, and Shielded VMs.
In April 2017, Microsoft released KB4015217, which updated Windows Server 2016 from the RTM build (14393.953) to 14393.970. This was a standard monthly quality update focused on reliability and security fixes.
The details you've provided suggest a specific point in time for a Windows Server 2016 installation, reflecting a particular update state. Given the specifics of Windows Server 2016's lifecycle, any server still running build 14393.970 as of early 2023 would need to consider updating to a more recent version or ensuring compliance with Microsoft's support policies.
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.
(Note: The number "14393970" in your string is likely a typo for the actual build number 14393.1944 or a combination of the KB number and build number. The build 14393.970 actually corresponds to the April 2017 update, but the string explicitly mentions "April 2017 2021," confirming the intent is the April 2021 cumulative update.)
Here are the key features and highlights of this specific release:
# From elevated PowerShell
wusa.exe "C:\updates\windows10.0-kb4015217-x64.msu" /quiet /norestart
# Check success
Get-HotFix -Id KB4015217
For offline servicing of a WIM or VHD:
dism /Mount-Image /ImageFile:C:\mount\install.wim /Index:1 /MountDir:C:\offline
dism /Image:C:\offline /Add-Package /PackagePath:C:\updates\kb4015217.msu
dism /Unmount-Image /MountDir:C:\offline /Commit
For Windows Server 2016, the April 2017 cumulative update was KB4015217 (OS Build 14393.970).
Release date: April 11, 2017
If you are looking for the original ISO (April 2017, en-US), you need:
If you want the latest 2021 build of Windows Server 2016, you need:
Would you like me to provide the exact update history table from April 2017 through December 2021 for Server 2016?
Or the full file list inside that specific ISO?
Windows Server 2016 Build 14393.970 refers to a specific system state achieved after applying the March 22, 2017 cumulative update ( The references you found likely point to a custom "Gen2" ISO release
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:
Specifically indicates the server has been patched with the March/April 2017 updates. 2021 Context:
While the build version is from 2017, the "2021" tag in file names usually signifies that the installer includes additional security patches or administrative tools updated as late as 2021. Editions Typically Included:
These ISOs often contain Standard, Standard Core, Datacenter, and Datacenter Core editions. Life Cycle & Support Mainstream Support: January 11, 2022 Extended Support: Remains active until January 12, 2027 Maintenance:
Beyond build 14393.970, many subsequent cumulative updates have been released. For example, by late 2024, the stable build version had reached 14393.7428. Important Considerations for Deployment
Deploy Storage Spaces Direct on Windows Server - Microsoft Learn
Windows Server 2016, specifically Build 14393.970, represents a critical point in the operating system's early maintenance phase. This specific build, released in March 2017 via KB4016635 , solidified the "Anniversary Update" foundation for enterprise environments. Overview of Build 14393.970
Released on March 22, 2017, Build 14393.970 was a cumulative update designed to address various stability and security issues discovered after the initial launch of Windows Server 2016 in late 2016. It was distributed as part of the Long-Term Servicing Branch (LTSB), ensuring a stable platform for mission-critical workloads. Key technical aspects of this build included: windows server 2016 build 14393970 enus april 2017 2021
Release Media: Sourced from the SW_DVD9_Win_Svr_STD_Core_and_DataCtr_Core_2016_64Bit_English_-2_MLF_X21-22843 media, it supported both Standard and Datacenter editions.
Core Improvements: Addressed bugs in the servicing stack and provided pre-installed updates to streamline new installations.
System Features: Included native UEFI support and was one of the last major server releases to maintain some 32-bit counterpart packages for specific repair tasks. Windows Server release information | Microsoft Learn
Windows Server 2016 Build 14393.970 (ENU) - April 2017 Update: A Detailed Review
In April 2017, Microsoft released an update for Windows Server 2016, bringing the build number to 14393.970 (ENU). This update was part of the ongoing effort to improve the stability, security, and performance of the Windows Server 2016 operating system. In this blog post, we will take a closer look at the details of this update, its significance, and what it means for Windows Server 2016 users.
What is Windows Server 2016 Build 14393.970 (ENU)?
Windows Server 2016 Build 14393.970 (ENU) is a cumulative update that was released on April 11, 2017. The update is also known as KB4015217 and is applicable to Windows Server 2016 systems with the English (United States) language pack installed.
Key Features and Fixes
The April 2017 update for Windows Server 2016 includes several key features and fixes, including:
Notable Fixes and Changes
Some notable fixes and changes in the April 2017 update for Windows Server 2016 include:
How to Install the Update
To install the April 2017 update for Windows Server 2016, follow these steps:
Conclusion
The April 2017 update for Windows Server 2016 (build 14393.970 ENU) is an important cumulative update that includes security patches, performance improvements, and stability and reliability fixes. Windows Server 2016 users should install this update as soon as possible to ensure their systems are up-to-date and protected against known vulnerabilities.
Update History
Here is a brief summary of the updates for Windows Server 2016:
By installing the latest updates, Windows Server 2016 users can ensure their systems remain secure, stable, and performant.
This guide outlines the details and lifecycle for Windows Server 2016 Build 14393.970, a specific maintenance release from March/April 2017. While this build was a key milestone in the OS's early life, Windows Server 2016 is currently in its Extended Support phase, meaning it only receives critical security updates. Build Overview: 14393.970 (March/April 2017)
Build 14393.970 was officially released on March 22, 2017, under update KB4016635. It is often associated with "April 2017" because many systems received or were imaged with this build during the April 2017 patch cycle (notably KB4015217). OS Version: 1607. Base Architecture: x64.
Editions Included: Standard, Datacenter, and Essentials (with both GUI "Desktop Experience" and "Server Core" options).
Key Fixes: Addressed issues with Hyper-V, Internet Explorer memory leaks, and improved reliability for the Host Network Service (HNS). Installation & System Requirements Build 14393
To install this specific build from media, your hardware must meet these minimum Windows Server 2016 specifications: Processor: 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
If you are still running Build 14393.970, your system is significantly outdated and vulnerable to security risks discovered after 2017. Mainstream Support Ended: January 11, 2022. Extended Support Ends: January 12, 2027.
Upgrade Path: Microsoft supports an in-place upgrade from Windows Server 2016 directly to newer versions like Windows Server 2022 or 2025. Maintenance Best Practices
How to find the build and OS version of Windows 10 and Server
This specific build corresponds to a version of Windows Server 2016 (version 1607) updated with the April 2017 cumulative updates, which remained a foundational release through 2021. Technical Overview OS Build: 14393.970 Release Date: April 11, 2017 (KB4015217)
Base Version: Windows Server 2016 Standard / Datacenter (LTSC) Architecture: x64 Language: en-US (English - United States) Key Features & Context (2017–2021)
By April 2017, Build 14393.970 addressed critical stability issues and security vulnerabilities. Throughout its lifecycle leading up to 2021, this version was widely used for:
Hyper-V Isolation: Enhancing virtual machine security through shielded VMs.
Windows Containers: Integrating Docker support directly into the server environment.
Nano Server: A minimal footprint installation option for cloud-native applications.
Storage Spaces Direct: Enabling highly available storage using local drives. Security & Maintenance
The April 2017 update (KB4015217) was significant as it provided fixes for the Windows kernel, scripting engine, and graphics component. For administrators maintaining this build through 2021:
Lifecycle: Windows Server 2016 followed the Fixed Lifecycle Policy. Mainstream support ended on January 11, 2022, meaning 2021 was the final year of full functional updates before entering Extended Support.
Servicing: To move past build 14393.970, users typically applied the latest cumulative updates (LCU) via WSUS or Windows Update to reach the final versions of the 14393 branch. Legacy Importance
Many enterprise environments standardized on the 2017-era builds because of their stability compared to earlier 2016 releases. By 2021, these systems were often being migrated to Windows Server 2019 or 2022 to take advantage of improved hybrid cloud capabilities with Azure.
Windows Server 2016 Build 14393.970 refers to a specific stable milestone reached through the March 22, 2017 cumulative update (KB4016635). This build is a part of the Windows Server 2016 (Version 1607) lifecycle, which serves as a critical foundation for modern hybrid-cloud environments. Build Overview and Core Specifications
This specific release (Build 14393.970) was a key update leading into the April 2017 patch cycle. It addressed critical security vulnerabilities and functional bugs that were discovered following the initial Release to Manufacturing (RTM) of Windows Server 2016 in late 2016. OS Version: Windows Server 2016 (Version 1607). Build Number: 14393.970. Release Date: March 22, 2017. Architecture: 64-bit (x64). Language: English (en-US). Key Features and Improvements
By April 2017, this build had matured to support intensive "Software-Defined Datacenter" (SDDC) initiatives. The primary enhancements in this version include:
Security Patches: Critical updates were delivered for the Windows Kernel, Internet Explorer, and the Scripting Engine to mitigate emerging threats.
Networking Stability: Significant improvements were made to the Host Network Service (HNS), which is vital for container networking and software-defined networking stacks.
Identity & Access: Enhancements to Active Directory Federation Services (AD FS) allowed for smoother authentication across diverse directories.
Nano Server Support: Continued refinements for the Nano Server installation option, including better recovery console tools and image building modules. Lifecycle and Support Milestones For offline servicing of a WIM or VHD:
Windows Server 2016 follows a long-term servicing model. While this specific build was a stepping stone, the broader 1607 version has a defined lifespan: KB4016635 (OS Build 14393.970)
22 Mar 2017 — KB4016635 (OS Build 14393.970) - Microsoft Support. Microsoft Support Windows 10 and Windows Server 2016 update history
The Lifecycle of Stability: Windows Server 2016 Build 14393.970
Windows Server 2016 represented a transformative shift for Microsoft, bridging the gap between traditional on-premises infrastructure and modern cloud-native architectures. Within its long history, Build 14393.970, released in March 2017 via KB4016635, stands as a critical checkpoint in the operating system's early maturity phase. A Foundation of Hybrid Innovation
At its core, Windows Server 2016 was built upon the same kernel as the Windows 10 Anniversary Update (Version 1607). It introduced several groundbreaking features that redefined server management: Windows Server 2016 | Центр оценки - Microsoft
The Windows Server 2016 Build 14393.970 refers to a specific stable point in the operating system's lifecycle reached during the March and April 2017 update cycle. As a release within the Windows Server 2016 Long-Term Servicing Channel (LTSC), it represents the "Anniversary Update" branch (version 1607). Build 14393.970 and the April 2017 Updates
Build 14393.970 was officially established via KB4016635 on March 22, 2017. Shortly after, the April 11, 2017 "Patch Tuesday" update (KB4015217) bumped the version further to builds 14393.1066 and 14393.1083. Key Improvements in the April 2017 Cycle:
Host Network Service (HNS): Improved to support overlay network drivers, enabling better multi-host container connectivity via Docker Swarm.
Stability Fixes: Addressed issues where screens would turn off unexpectedly despite power settings, and fixed credential-related bugs in Active Directory environments using Credential Guard.
Internet Explorer 11: Resolved form display issues within CRM 2011. Performance and Security in 2021 Windows Server release information | Microsoft Learn
Introduction
Windows Server 2016 is a server operating system developed by Microsoft as part of the Windows NT family of operating systems. It was released on October 12, 2016, and has since undergone several updates and builds. This essay will focus on Build 14393.970 (en-US) of Windows Server 2016, which was released in April 2017. We will examine the key features, security enhancements, and support lifecycle of this build, as well as its relevance in 2021.
Key Features of Build 14393.970
Build 14393.970 of Windows Server 2016 was a cumulative update released on April 11, 2017. This update included various security enhancements, bug fixes, and performance improvements. Some of the key features of this build include:
Security Enhancements
Security was a major focus area for Windows Server 2016, and Build 14393.970 was no exception. This build included several security enhancements, including:
Support Lifecycle
The support lifecycle for Windows Server 2016 Build 14393.970 is an important consideration for organizations that rely on this build. Microsoft provides mainstream support for Windows Server 2016 for five years from the general availability date, which was October 12, 2016. Extended support is available for an additional five years. Therefore, support for Build 14393.970 (en-US) ended on January 11, 2022, after which only security updates were provided.
Relevance in 2021
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.
However, running an older build like 14393.970 (en-US) can pose security risks, as newer security threats and vulnerabilities may not be addressed. Organizations still running this build are encouraged to upgrade to a more recent version of Windows Server, such as Windows Server 2019 or Windows Server 2022, to ensure they receive the latest security updates and support.
Conclusion
Windows Server 2016 Build 14393.970 (en-US) was a significant update released in April 2017. This build included various security enhancements, bug fixes, and performance improvements. Although it is no longer fully supported in 2021, it remains a widely used build in many organizations. Organizations still running this build are encouraged to upgrade to a more recent version of Windows Server to ensure they receive the latest security updates and support.