icacls C:\Windows\System32\termsrvdll.dll /grant SYSTEM:RX /grant "NETWORK SERVICE:RX" Warning: This should only be done on non‑production servers under strict guidance. Resetting the grace period incorrectly can permanently disable RDS.
After any registry change, restart the service. Step 4: Re‑register termsrvdll Open an elevated Command Prompt:
Introduction If you manage a Windows Server 2019 environment with Remote Desktop Services (RDS), you have likely encountered the file termsrvdll.dll . While it may look like an obscure system library at first glance, this DLL plays a pivotal role in the licensing mechanism of Remote Desktop Services. Misconfigurations, corruption, or version mismatches involving termsrvdll are common culprits behind “The remote session was disconnected because there are no Remote Desktop Licensing Servers available” errors. termsrvdll windows server 2019
If termsrvdll is intact but claims the grace period is expired, use licensingdiag.exe tool:
Last updated: 2025 – Applies to Windows Server 2019 (build 1809 and later, including LTSC 2019). Remote Desktop licensing error Windows Server 2019, fix termsrvdll.dll missing, RDS grace period reset, RD Licensing troubleshooting, termsrvdll event ID 4105. icacls C:\Windows\System32\termsrvdll
A: Yes. While both contain a file named termsrvdll.dll , the server version includes logic for managing multiple simultaneous RDS sessions and enterprise licensing. Never cross‑copy these DLLs.
Remember: always work with a tested backup, prefer Microsoft‑signed versions, and keep your licensing infrastructure neat. By understanding and respecting the role of termsrvdll , you ensure that your Windows Server 2019 remains a robust, reliable RDS host for years to come. Step 4: Re‑register termsrvdll Open an elevated Command
sfc /scannow If corruption is found, SFC will replace termsrvdll from the cached copy in C:\Windows\WinSxS .