While the technical act is possible, it generally violates the Microsoft End User License Agreement (EULA).
Note: If your Windows Server 2016 has recent cumulative updates installed, the hex offsets and patterns will differ. You must search for updated patterns specific to your exact build number (run winver to check your build). Step 5: Restart the Remote Desktop Service
This restriction is hardcoded into the Remote Desktop Services subsystem, specifically governed by the termsrv.dll (Terminal Services Library) file located in the C:\Windows\System32 directory. termsrv.dll patch windows server 2016
B8 00 01 00 00 90 89 81 3C 06 00 00 Instructions for editing: Open your Hex Editor as an Administrator. Open C:\Windows\System32\termsrv.dll . Use the Find/Replace function set to "Hex-values".
If you need to allow more than two concurrent remote desktop connections on Windows Server 2016 (without RDS CALs), patching termsrv.dll is a common workaround. , as it violates Microsoft licensing. While the technical act is possible, it generally
termsrv.dll (Remote Desktop Session Host Server Remote Connections Manager) is a critical system component located at C:\Windows\System32\termsrv.dll . It is responsible for managing RDP sessions, including enforcing the connection limit hard‑coded into non‑server editions and, to a lesser extent, the default administrative limit in server OSes. By default, Windows Server 2016, like its predecessors, restricts concurrent remote connections to two simultaneous administrative sessions. In client operating systems such as Windows 10 or 11, the limit is even stricter: only a single user session is permitted at a time.
Rename the original file in C:\Windows\System32\ to termsrv.dll.bak . Step 5: Restart the Remote Desktop Service This
Allows multiple unique users to log in simultaneously and work in independent environments. Risks and Legal Compliance Warning
What is your exact ? (Type winver in your run dialog). Are you using a manual hex edit or an automated wrapper ?