Universal Termsrv.dll Patch Windows Server 2012 R2 Work Jun 2026

There are two primary ways the community applies this patch: 1. Manual Hex Editing

Open an elevated Command Prompt:

By default, Windows Server 2012 R2 Remote Desktop Services (RDS) allows only one active Remote Desktop session per user unless a full RDS Terminal Server infrastructure with licensing is deployed. This guide outlines the procedure to modify the termsrv.dll system library to remove this single-session limitation, allowing multiple concurrent RDP sessions for administrative purposes. universal termsrv.dll patch windows server 2012 r2