Open termsrv.dll in your hex editor. Search for the specific byte signature corresponding to your Windows build version and replace it with the patching string (these signatures vary by Windows build and must be sourced accurately from developer forums).
The is a third-party modification for Windows 10. It unlocks multiple concurrent Remote Desktop (RDP) sessions on non-Server Windows editions. Universal Termsrv.dll Patch For Windows 10
Right-click the executable file (often named UniversalTermsrvPatch-x64.exe or x86.exe depending on your architecture) and select Run as Administrator . Open termsrv
Last tested on Windows 10 22H2 (build 19045). Always verify patcher signatures from trusted sources like MDL. Universal Termsrv.dll Patch For Windows 10
It works independently of an external wrapper wrapper service.
Open an elevated Command Prompt and type net stop termservice .