Windows 10 Enterprise LTSC 2019 builds on Windows 10 Pro, version 1809 adding premium features designed to address the needs of large and mid-size organizations (including large academic institutions), such as:

Windows 10 is a series of personal computer operating systems produced by Microsoft as part of its Windows NT family of operating systems. It is the successor to Windows 8.1, and was released to manufacturing on July 15, 2015, and to retail on July 29, 2015. Windows 10 receives new releases on an ongoing basis, which are available at no additional cost to users. Devices in enterprise environments can receive these updates at a slower pace, or use long-term support milestones that only receive critical updates, such as security patches, over their ten-year lifespan of extended support.

Windows 10 is a series of personal computer operating systems produced by Microsoft as part of its Windows NT family of operating systems. It is the successor to Windows 8.1, and was released to manufacturing on July 15, 2015, and to retail on July 29, 2015. Windows 10 receives new releases on an ongoing basis, which are available at no additional cost to users. Devices in enterprise environments can receive these updates at a slower pace, or use long-term support milestones that only receive critical updates, such as security patches, over their ten-year lifespan of extended support.

The Microsoft development team is pleased to announce the availability of Windows Server 2019 LTSC version 1809 Build 1935. This build includes last updates and bug fixes to May 11, 2021.

As part of the May 2021 Patch Tuesday cycle, Microsoft released a cumulative update KB5003173 for Windows 10 on May 11. This was a security update for Windows 10 May 2020 Update (version 2004), Windows 10 October 2020 Update (version 20H2), and Windows 10 May 2021 Preview Update (version 21H1) with a few quality improvements.