If you still want to test this in a lab/non-production environment:
The termsrv.dll patch is a binary modification of the Remote Desktop service library located in C:\Windows\System32\termsrv.dll . termsrvdll patch windows server 2019 repack new
If you specifically want to avoid the RDS role or licensing, many users look for a "repack" or patch. RDP wrapper working SERVER 2016 & 2019 #1379 - GitHub If you still want to test this in