Contextual.exe is an adware program Adware.CtxPopup. Contextual.exe is a Browser Helper Object. Contextual.exe downloads and displays advertisements. Related files: %System%\contextual.exe %System%\CtxPopup.dll More info: http://securityresponse.symantec.com/avc... Removal: Kill contextual.exe process and remove contextual.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.