Introduction Windows Server has long been the backbone of enterprise IT infrastructure, providing services ranging from file sharing to complex application hosting. One of its most critical roles is as a Remote Desktop Services (RDS) host, allowing administrators and users to connect remotely. However, by default, Windows Server 2022—like its predecessors—restricts the number of concurrent Remote Desktop Protocol (RDP) sessions.
To verify the limit change, run PowerShell: termsrv.dll patch windows server 2022
Last updated: 2025 (reflecting Windows Server 2022 build 20348). Check community forums for the latest byte patterns after Microsoft cumulative updates. Introduction Windows Server has long been the backbone
takeown /f C:\Windows\System32\termsrv.dll icacls C:\Windows\System32\termsrv.dll /grant Administrators:F You have two options. To verify the limit change, run PowerShell: Last
copy C:\Windows\System32\termsrv.dll C:\termsrv_backup.dll copy C:\Windows\System32\termsrv.dll C:\Windows\System32\termsrv_original.dll net stop TermService /y Step 3: Take Ownership and Modify Permissions By default, TrustedInstaller owns termsrv.dll . You need to change ownership to Administrator.
$dll = "C:\Windows\System32\termsrv.dll" $bytes = [System.IO.File]::ReadAllBytes($dll) # Search for pattern and replace. (Specific offsets are version-dependent) # Refer to latest GitHub gists for Server 2022. Step 5: Replace the Patched DLL copy /Y C:\path\to\patched\termsrv.dll C:\Windows\System32\termsrv.dll Step 6: Restart the Service net start TermService Step 7: Test the Patch Initiate a third RDP session from a different client. Open Task Manager on the server → Users tab. You should see three active sessions.