msnserve.exe is a network-aware worm W32.Spybot.YQW. msnserve.exe opens a back door on TCP port 7043. msnserve.exe spreads via open network shares. msnserve.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\msnserve.exe Adds the value: "Service Monitor" = "msnserve.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill msnserve.exe process and remove msnserve.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.