If the patch fails to work after a Windows Update, it is likely because Microsoft replaced the modified termsrv.dll with a newer version. You will need to re-apply the patch or update the RDP Wrapper configuration file.
Install-WindowsFeature -Name RDS-RD-Server -IncludeAllSubFeature # Reboot, ignore license warnings for 120 days. universal termsrvdll patch windows server 2012 r2 top