If you are using Remote Desktop Gateway or RD Web Access, patching termsrv.dll on the session host may cause licensing mismatch errors. In that case, revert the patch and deploy proper RDS CALs.
You can launch the script with administrative privileges in two ways:
Windows Server 2022 limits concurrent Remote Desktop Services (RDS) connections by default. If you do not install the Remote Desktop Session Host (RDSH) role and purchase client access licenses (CALs), the operating system restricts you to two simultaneous administrative sessions. termsrv.dll patch windows server 2022
But beware: The server still expects RDS CALs for every user beyond the built-in administrative exemption. The patch merely disables the enforcement mechanism, not the legal requirement.
Check RDPConf.exe to verify if the status reads "Wrapper State: Installed" and "Service State: Running". If you are using Remote Desktop Gateway or
| Solution | Pros | Cons | |----------|------|------| | | Fully compliant, supported, secure. | Costs money (approx $150-$200 per CAL). | | Third-party RDP servers (e.g., ThinLinc, xrdp on Windows) | May bypass session limits legally. | Complex setup, potential performance issues. | | Windows Admin Center (WAC) | Free, modern web-based management. | Not a full desktop experience; no multi-user. | | Use a Linux VM with full multi-user RDP (xrdp) | Free, unlimited sessions. | Requires Linux expertise; not native Windows. | | Multiple free tools (e.g., RDP Wrapper) | Similar to termsrv.dll patch but with dynamic patching. | Same legal/security issues, often broken by updates. |
fabianosrc/TermsrvPatcher: Patch termsrv.dll so that ... - GitHub If you do not install the Remote Desktop
Because Microsoft updates termsrv.dll frequently, the exact hex patterns can shift slightly depending on your build number. Open your Hex Editor (e.g., HxD) as an Administrator. Open C:\Windows\System32\termsrv.dll .