Share via

Upgrade Windows 10 Enterprise 2016 LTSB to Windows 10 Enterprise LTSC 2019

Paul Northcott 20 Reputation points
2026-02-06T22:39:21.8066667+00:00

Hello

I was wondering is it possible to do an in place upgrade of systems running Upgrade Windows 10 Enterprise 2016 LTSB to Windows 10 Enterprise LTSC 2019 without rebuilding the systems assuming I have / purchase a license key for Windows 10 Enterprise LTSC 2019?

Paul

Windows for business | Windows Client for IT Pros | Devices and deployment | Set up, install, or upgrade
0 comments
Answer accepted by question author
  1. Domic Vo 17,825 Reputation points Independent Advisor
    2026-02-07T02:31:46.26+00:00

    Hello Paul,

    You can perform an in‑place upgrade from Windows 10 Enterprise 2016 LTSB to Windows 10 Enterprise LTSC 2019 without rebuilding the systems, but there are strict conditions. The upgrade path is supported only if you use the proper installation media for LTSC 2019 and a valid license key. Microsoft treats LTSB/LTSC as separate editions, so you cannot simply apply a key to switch versions; you must run setup from the LTSC 2019 ISO and choose the “Upgrade” option. This preserves applications, data, and configuration.

    Before starting, confirm the current edition by running winver or checking HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion for EditionID. It should show EnterpriseS for LTSB. Then mount the LTSC 2019 ISO, run setup.exe, and select “Keep personal files and apps.” Enter your LTSC 2019 product key when prompted. The installer will replace the OS binaries with LTSC 2019 while maintaining your environment.

    Be aware that you cannot upgrade directly to mainstream Enterprise editions (like SAC builds) from LTSB/LTSC. The only supported in‑place upgrade is from one LTSC/LTSB release to the next. Also, if the system was originally installed as evaluation, you must convert it to a licensed edition first using DISM before attempting the upgrade.

    In short, yes, you can upgrade in place from 2016 LTSB to 2019 LTSC, but it requires running the LTSC 2019 setup media with a valid license key. This is the supported Microsoft path and avoids a full rebuild.

    I hope you've found something useful here. If it helps you get more insight into the issue, it's appreciated to accept the answer. Should you have more questions, feel free to leave a message. Have a nice day!

    Domic Vo.

2 additional answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Domic Vo 17,825 Reputation points Independent Advisor
    2026-02-10T06:12:25.47+00:00

    Good morning

    I hope you are doing well.

    Have you found the answer useful? If everything is okay, don't forget to share your experience with the issue by accepting the answer. Should you need more information, free free to leave a message. Happy to help! :)

    Domic Vo.

  2. Q&A Assist
    2026-02-06T22:39:58.97+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    In-place upgrades from Windows 10 Enterprise 2016 LTSB to Windows 10 Enterprise LTSC 2019 are not supported. The Windows 10 LTSC 2016 release only allows data-only and clean install options. Therefore, you would need to rebuild the systems rather than performing an in-place upgrade, even if you have a license key for Windows 10 Enterprise LTSC 2019.

    References:

    0 comments

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.