Windows Server 2022 is a powerhouse for enterprise operations, but out of the box, it enforces strict limits on Remote Desktop Services (RDS). By default, the system allows only two concurrent administrative sessions. For businesses needing more without the heavy price tag of Client Access Licenses (CALs), many administrators look for a .

Example with Universal Patcher (run as admin):

The “termsrvdll” term arose from internet forums where users attempted to hex-edit or replace termsrv.dll to modify the session limit – often renaming the modified file to something like termsrvdll_patched.dll and then misspelling it in guides.

Microsoft frequently updates termsrv.dll for security. When the file version changes, your hex patch (or RDP Wrapper config) becomes outdated.

You will need a Hex Editor (like HxD). Open the DLL file and search for the following patterns (these vary slightly by build): 39 81 3C 06 00 00 0F 84 XX XX XX XX Replace with: B8 00 01 00 00 89 81 38 06 00 00 90

Future Windows Updates may overwrite the patched file, causing RDP to stop working or leading to system crashes.