Problem encoder

Hi guys i want ask one questions why for example when i use metasploit payloads without encoder work in windows 7 i have sessions meterpreter sessions but with disable antivirus and firewall while if i use encoder and bypass many antivirus http://postimg.org/image/ahl7kjj67/ i have this error afther in my windows 7 when i open file http://postimg.org/image/rsy9756k5/ " the application failed to start correctly (0xc0000005). Click ok to close the application " .

ok thanks same i have now another method now for hack all windows 7-8.1 with firewall open and with any antivirus i have shell meterpreter