This is a comprehensive guide on patching the termsrv.dll file on Windows Server 2016.
⚠️ Copy C:\Windows\System32\termsrv.dll to a safe location.
Alternatively, run this command in PowerShell as an Administrator: powershell Stop-Service -Name "TermService" -Force Use code with caution. Step 2: Take Ownership of termsrv.dll termsrv.dll patch windows server 2016
Use the function to locate the original hex signature for Windows Server 2016. Replace the original bytes with the patched bytes.
To enable more sessions without purchasing Remote Desktop Services (RDS) Client Access Licenses (CALs), you must modify the termsrv.dll file. This guide provides a step-by-step walkthrough for patching this file. Important Prerequisites and Risks This is a comprehensive guide on patching the termsrv
Windows Server 2016 is a powerful operating system designed to handle robust enterprise workloads. By default, Microsoft limits Remote Desktop Services (RDS) on non-configured servers to allow only two concurrent administrative sessions. If a third user attempts to log in, one of the active users must disconnect.
0F 84 C7 → JE (jump if equal) is replaced with 90 90 90 (NOP sled), bypassing the license limit check. Step 2: Take Ownership of termsrv
Because the script automatically matches the correct byte pattern to the OS version, it is more reliable than manual hex editing and reduces the chance of corruption.
: Copy the original termsrv.dll file from C:\Windows\System32\ to a secure external location or a backup folder.
Close and reopen the properties to grant your account permissions. Backup the Original File : Copy termsrv.dll and rename the copy to termsrv.dll.bak . Edit the File with a Hex Editor : Open termsrv.dll in a tool like HxD Hex Editor.