Change from local KMS to M365 E3 Windows activation fails

Hi Marcel100 

have you had a response yet. I too have a project that involves your steps and was wondering how you were going about it. Windows 10 1703 KMS Enterprise moving to M365 E5. 

The process I was thinking was to; 

1. remove KMS key

2. interrogate bios for Pro Key

3. install and activate Pro Key

4. following https://docs.microsoft.com/en-us/windows/deployment/deploy-enterprise-licenses to activate enterprise.

The script below hopefully  will perform 1-3 

@echo off
echo Remove KMS Key
slmgr.vbs /upk
FOR /F "skip=1" %%A IN ('wmic path SoftwareLicensingService get OA3xOriginalProductKey') DO (
SET "ProductKey=%%A"
goto InstallKey
)
:InstallKey
IF [%ProductKey%]==[] (
echo No key present
) ELSE (
echo Installing %ProductKey%
changepk.exe /ProductKey %ProductKey%
)

slmgr.vbs /ato

not sure if this helps you.