Using Group Policy or a script to deny write access to termsrv.dll (not recommended – may break updates).
: Search for the following hex pattern and replace it (values may vary slightly by build): 39 81 3C 06 00 00 0F 84 XX XX XX XX B8 00 01 00 00 89 81 38 06 00 00 90 Restart Service net start TermService Method 2: Automated Patching (GitHub Scripts) Termsrv.dll Patch Windows Server 2022 -FREE-
Note: The specific hex strings change with Windows Updates (e.g., Build 21H2 vs 22H2). Always verify your specific build number before patching. Using Group Policy or a script to deny
Instead of patching termsrv.dll , consider these Microsoft-supported options for multiple RDP sessions: Termsrv.dll Patch Windows Server 2022 -FREE-