While the patch may function technically, it violates Microsoft's End User License Agreement (EULA). This can lead to legal issues in a corporate environment. How to Patch termsrv.dll (General Concept)

Windows Server 2022 allows a 120-day licensing grace period. For short-term projects, you can use the official RDS role without immediate payment.

A "patch" involves modifying the hexadecimal code within this DLL to trick the operating system into allowing multiple concurrent sessions without triggering the RDS licensing grace period or requiring a license server. Why Users Seek a Windows Server 2022 Patch

RDS CALs can be expensive for small startups or home labs.

The original file is replaced with the modified version, and the service is restarted. Safer Alternatives to Patching