This will show how to create a .intunewin file using an MSI installer file.
Reference link: https://learn.microsoft.com/en-us/intune/intune-service/apps/apps-win32-prepare
First download and extract the IntuneWinAppUtil.exe package. I like to place them in a ‘temp’ folder on the C: drive
Then create a ‘Source’ and ‘Destination’ folder for easy management.
Download your MSI file and place it in the ‘Source’ folder
Open up PowerShell and change directories to the ‘temp’ folder and then run the following command
.\IntuneWinAppUtil.exe -c .\Source\ -s .\Source\YOUR__MSI_FILE.msi -o .\Destination\
Run the command, and then you should fine the .intunewin file within your destination folder
