This file is a harmful and undesirable program. Probably virus. It's recommended to delete it.
What is MDNZ.exe Windows startup process
File name: MDNZ.exe
Program name: MDN
Description: RBOT.AQD WORM
Information added by: djcool007 at 11 July 2008
Hint: If mdnz.exe file is a virus or trojan, we recommend to use a antivirus software or registry cleaner.