It looks like you’re trying to combine search terms related to extending the Terminal Services (Remote Desktop) grace period on Windows Server 2016 using a free method (likely a patch or DLL replacement).
Remote Desktop Session Host (RDSH): Install the RDSH role via Server Manager. termsrvdll patch windows server 2016 free
Take Ownership: Go to C:\Windows\System32\termsrv.dll, right-click Properties > Security > Advanced, and change the owner to your admin account. Give yourself "Full Control" permissions. It looks like you’re trying to combine search
Administration Mode: By default, you can have 2 concurrent sessions for administrative purposes without any extra configuration. Give yourself "Full Control" permissions
Microsoft’s EULA explicitly prohibits modifying system binaries to circumvent licensing. Using a patched termsrv.dll in a production or commercial environment exposes you to: