I've recently had to deploy a new MDT server on a Windows 2019 machine, should be straight forward having done this 2-3 years ago.
But apparently Microsoft made changes causing it to not working anymore on a fresh install.
First when you start the Deployment Workbench > Rightclick Properties on the Deployment Share > WinPE Tab, it will crash
Second, you can't generate any LiteTouch images at all, it will say the WIM file is missing and when you check the boot folder in the deployment share nothing is in there.
Apparently the newer versions do not contain the x86 images anymore, Microsoft is trying force everyone to x64 which isn't a bad thing, but it would be nice to leave things not broken.
To fix this issue you need to do the following:
- Create the following folders in this path if missing
C:\Program Files (x86)\Windows Kits\10\Accessment and Deployment Kt\Windows Preinstallation Environment\x86\WinPE_OCs
- In Deployment Workbench, rightclick the deployment share and click Properties
- Under Platforms Supported, uncheck x86.
By doing this you do not disable the ability to install x86 versions of Windows.