Running Docker 1.12.1-stable (build 7135) on Windows 10, and I have a variation on this problem, too.
Error starting userland proxy: Bind for 0.0.0.0:80: unexpected error Unix.Unix_error(Unix.EACCES, “bind”, “”).
Error persists even after removing containers and volumes.
In PowerShell, the command
netstat -ano | Select-String "80" shows that TCP 0.0.0.0:80 is LISTENING with Id 4, but
Stop-Process 4 returns an Access is Denied error, even when PowerShell is run as Administrator.
Did a Docker reset, downloaded the divio/django-cms-preview image I’ve been trying to explore, and ran it again, which resulted in the same binding error.