Termsrv.dll Patch Windows Server 2016 _verified_ Page

Patching termsrv.dll is a common but unofficial method used to enable multiple concurrent Remote Desktop (RDP) sessions on Windows Server 2016 without requiring a Remote Desktop Services (RDS) license. 🛠️ Purpose of the Patch

  1. Boot into Safe Mode or use a recovery environment.
  2. Delete the patched termsrv.dll from System32.
  3. Copy the original backup: copy C:\termsrv_backup_original.dll C:\Windows\System32\termsrv.dll
  4. Reset boot configuration if you changed it:
copy C:\Windows\System32\termsrv.dll C:\Windows\System32\termsrv.dll.backup

2. Use Third-Party Remote Access Software

  1. Security vulnerabilities: Microsoft releases security patches to fix vulnerabilities in termsrv.dll. Applying these patches ensures that your server is secure and protected against potential attacks.
  2. Feature updates: Patching termsrv.dll can enable new features or fix issues with Remote Desktop Services, ensuring a smoother user experience.
  3. Compatibility issues: In some cases, applications or third-party software may require a patched version of termsrv.dll to function correctly.

Objective

By default, Windows Server 2016 allows only one active Remote Desktop session per user (or two administrative sessions). This patch modifies the termsrv.dll file to remove the single-session limit, allowing multiple concurrent RDP sessions with the same or different user accounts without a proper RDS License Server. termsrv.dll patch windows server 2016