Microsoft Server

Update or Install missing drivers on Windows Server Core 2016/2019 for free

Install Drive Easy Free from:
https://www.drivereasy.com/download-free-version/

Start DriverEasy from

“C:\Program Files\Easeware\DriverEasy\DriverEasy.exe”

Scan the machine
Pick the driver you need from the list and download it.

In the prompt, cd to folder:

c:\users\<username here>\Appdata\Roaming\Easeware\DriverEasy\Drivers\

To find the driver you just downloaded, type:
dir *.inf /s/b
CD to that directory and type:
pnputil -i -a <filename here>.inf

Note: DriverEasy will crash after ever single download as it does not have a GUI to fall back on, so, unless you want to spend a lot of time restarting DriverEasy, only bother with the drivers you really need. I usually only bother with storage and network drivers.
Also, if you happen to have core installed on a laptop with integrated hardware like webcams, etc. these drivers will have issues installing as the underlying infrastructure is missing