If you prefer to manually patch the file or cannot use wrapper tools, you can edit termsrv.dll using a Hex Editor (like HxD).
Use RDPConf.exe to check the status; if it shows "Not supported," you may need to find an updated .ini file for your build. 2. Manual termsrv.dll Patching (Hex Editing) termsrvdll patch windows server 2016 free
(Remote Desktop Service), replace or patch the file, and restart the service. Critical Review: Pros and Cons If you prefer to manually patch the file
On a Domain Controller or a server with Remote Desktop Session Host (RDSH) role installed, a patched termsrv.dll can cause Group Policy failures and profile corruption. if it shows "Not supported