If you want, I can provide a step-by-step guide for enabling/configuring RDS, setting up CALs, or securing RDP on Server 2012 R2.
Often compatible across various Windows versions, including Windows 7, 8, 10, and Server 2012 R2. Ease of Use: Most versions come as a simple executable (like UniversalTermsrvPatch-x64.exe ) that automates the file replacement and registry changes. How to Apply the Patch (The Basics) Note: Always back up your original termsrv.dll before making changes. Patching Microsoft's RDP service yourself - Sam Decrock universal termsrv.dll patch windows server 2012 r2
allows for multiple simultaneous connections without these licenses, though it is technically a violation of Microsoft's licensing agreement Method 1: Manual termsrv.dll If you want, I can provide a step-by-step