: Click the "Patch" button. The tool usually creates a backup file ( termsrv.dll.backup ) before overwriting the original.
| Solution | Cost | Concurrent RDP | Complexity | Legality | | :--- | :--- | :--- | :--- | :--- | | | Free | Yes (Unlimited) | Medium | Violates EULA | | Windows Server + RDS CALs | High ($500+ per user) | Yes | High | Fully Compliant | | Third-Party RDP Servers (e.g., ThinLinc, TeamViewer, AnyDesk) | Free to Paid | Varies | Low | Compliant (no RDP used) | | Linux + XRDP | Free | Yes | High | Fully Compliant | | Windows 365 Cloud PC | Subscription | No (1 user) | Low | Compliant | Universal Termsrv.dll Patch
However, for the vast majority of Windows editions—specifically the client versions like Windows 10, 11, 7, and 8—there is a hard-coded limitation: is allowed. If a user is logged in locally at the computer, a remote connection will either take over that session (disconnecting the local user) or be blocked entirely. If a remote session is active, the local console is locked. : Click the "Patch" button