When a third user tries to connect, termsrv.dll checks if an RDS licensing server is active. If not, it rejects the connection. Patching this DLL involves changing the code to bypass this license check. Why Patch termsrv.dll on Windows Server 2016?
icacls C:\Windows\System32\termsrv.dll /grant Administrators:F Use code with caution. Step 2: Stop the Remote Desktop Service
To help find the exact byte sequence for your environment, please let me know: termsrv.dll patch windows server 2016
# Define the byte patterns # Pattern for Windows Server 2016 (Usually builds 14393) $pattern = "39 81 3C 06 00 00 0F 84 7F 2C 01 00" $replace = "B8 00 01 00 00 89 81 38 06 00 00 90"
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. When a third user tries to connect, termsrv
B8 00 01 00 89 81 38 06 00 90
Set to Disabled .
You may need a community-updated rdpwrap.ini file if your specific Server 2016 build isn't supported out of the box. Option 2: Manual hex editing (Advanced)
Note: Patterns change slightly depending on the exact Windows Server 2016 build version. Search for: 39 81 3C 06 00 00 0F 84 B1 7D 02 00 Replace with: B8 00 01 00 00 90 89 81 3C 06 00 00 Save the changes and close the hex editor. Step 5: Restart the Remote Desktop Service Restart the service to apply the patch: net start TermService Use code with caution. Using Automated RDP Wrapper Tools Why Patch termsrv
Allows multiple users to work concurrently in a lab or development setting.
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