Having problems with the port 80

[peter9811]

(HTTP code 500) server error - Ports are not available: exposing port TCP 0.0.0.0:80 -> 0.0.0.0:0: listen tcp 0.0.0.0:80: bind: An attempt was made to access a socket in a way forbidden by its access permissions.

I tried 8080, works fine, but when I open localhost, and after charge the google account show error about forgiven "80"