The answer is no, Windows Server 2019 RDS is not entirely free. While you can install and test Windows Server 2019 without a license, using RDS in a production environment requires a valid license.
This is only for managing the server. You cannot use it to host a multi-user environment where employees run daily apps like Excel or CRM software. The Reality Check windows server 2019 remote desktop services license free
: This is intended for organizations to configure and test their environment before committing to a purchase. 2. Built-in Administrative Connections (Always Free) The answer is no, Windows Server 2019 RDS
: By default, Windows Server allows up to two simultaneous connections for administrative purposes without any additional RDS licensing. This is part of the base OS license. You cannot use it to host a multi-user
A quick Google search yields countless PowerShell scripts that reset the RDS grace period via slmgr /rearm . While these work for Windows client OS (Windows 10/11), they have limited success on Server 2019 RDS licensing server role. Most modern Server 2019 updates (KB500xxxx) have patched this loophole. If you find a script that works today, expect it to fail after the next cumulative update.