Vagrant error : Failed to mount folders in Linux guest

Question

I have some issues with Vagrant shared folders, my base system is Ubuntu 13.10 desktop.

I do not understand why I have this error is something that is not right conf

Answer 1

I experienced the same issue with Centos 7, I assume due to an outdated kernel in combination with an updated version of VirtualBox. Based on Blizz's update, this is what worked for me (vagrant-vbguest plugin already installed):

vagrant ssh
sudo yum -y install kernel-devel
sudo yum -y update
exit
vagrant reload --provision