Only under these precise conditions:
Never use the REPACK:
The "REPACK" label adds convenience but does not change the fundamental nature of the tool: it is an unsupported hack. Microsoft deliberately limits concurrent RDP sessions to drive RDS CAL sales. While frustrating for small shops, circumventing this via binary patching is a short-term fix that often leads to long-term pain. Termsrv.dll Patch Windows Server 2019 REPACK
If you truly need concurrent sessions on Server 2019, budget for RDS CALs. If you cannot afford it, consider Linux with XRDP, or use multiple free hypervisors (Hyper-V, VirtualBox) to spin up disposable Server 2019 VMs. Only under these precise conditions:
Before turning to unsafe REPACKs, consider these legal, supported approaches: Never use the REPACK:
Original termsrv.dll patches were often distributed as simple scripts or standalone modified DLLs. Over time, attackers and repackers have re-released these patches for several reasons: