outlookexpressupdate.exe is a worm W32.Rbot-YU. outlookexpressupdate.exe opens a back door on IRC channels. outlookexpressupdate.exe spreads via open network shares. outlookexpressupdate.exe tries to terminate antiviral programs installed on a user computer. outlookexpressupdate.exe monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\outlookexpressupdate.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill outlookexpressupdate.exe process and remove outlookexpressupdate.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.