The Matrix Online Server Emulator

The procedure entry point RegDeleteKeyExA could not be located in the dynamic link library advapi32.dll

http://prntscr.com/57ar04

Windows XP 32 bits SP3

Try this https://files.sshnuke.net/dbghelp_0930_winxp.zip
Overwrite the existing dbghelp.dll in MxO dir with that one.

http://prntscr.com/57mgsh

Authenticating...Failure Auth server inaccessible

Which exe did you run ?

Launcher.exe mxoemutestserver

You run just launcher.exe you don't use any external launcher.