How to debug “Vagrant cannot forward the specified ports on this VM” message

Question

I\'m trying to start a Vagrant instance and getting the following message:

Vagrant cannot forward the specified ports on this VM, since they
would collide wi         


        

Answer 1

You have to modify your Vagrantfile within your current directory including the following command:

config.vm.network "forwarded_port", guest: 4567, host: 

Keep in mind that there also a hidden folder (.vagrant.d/) containing settings for your vagrant environment as well as config files for your boxes. Usually this folder is in your home directory.

e.g.

~/.vagrant.d/boxes//0/virtualbox/Vagrantfile

Usually this file includes another Vagrantfile located in ~/.vagrant.d/boxes//0/virtualbox/include/_Vagrantfile

You have to modify this file as well with the port-forwarding command