Virtualbox permission denied error on mac host and linux guest

if you shared folder on the vm settings -> shared folders, can access this as root and are getting a permission denied problem as any other user, below is the list of steps for you :)

find uid (500) and gid (52000) of the user on the guest linux

login as root and run the following commands:

sudo mount -t vboxsf -o uid=500 Downloads /mnt/Downloads_win

or edit /etc/fstab and add the following at the end:

Downloads /mnt/Downloads_win vboxsf uid=500,gid=52000 0 0

Hope it works