Existing VM
Check your host and guest version by:
vagrant vbguest --status
or for specific VM:
VBoxManage guestproperty get <UUID> /VirtualBox/GuestAdd/Version
where <UUID>
can be found by VBoxManage list vms
.
Then try updating your guest additions by:
VBoxManage guestcontrol <uuid/vmname> updatega|updateguestadditions|updateadditions
or by installing it again in VM:
vagrant vbguest --do install
Alternatively set the version which is recorded in VBox by:
/Applications/VirtualBox.app/Contents/MacOS/VBoxManage guestproperty set "new_version" /VirtualBox/GuestAdd/Version
Note: Change new_version
into the right one
To uninstall guets addition in VM (vagrant ssh
), do the following:
/opt/VirtualBoxGuestAdditions/uninstall.sh
rm -rf /tmp/Virtualbox; sudo reboot;
To install it again:
VAGRANT_LOG=info vagrant vbguest --do install
Finally re-check by: vagrant vbguest --status
.
Source: Issues removing and updating box additions with Virtualbox 4.3 #95 at GitHub
New VMs
If above won't help and this mismatch warning happening for all new VMs, you need to either upgrade your VirtualBox or download VBoxGuestAdditions ISO file from VirtualBox website (with the right version, so they can match) and replace it manually.
On OS X it's in /Applications/VirtualBox.app/Contents/MacOS
, so the command would be:
sudo wget -O /Applications/VirtualBox.app/Contents/MacOS/VBoxGuestAdditions.iso http://download.virtualbox.org/virtualbox/5.0.14/VBoxGuestAdditions_5.0.14.iso
where version of VBoxGuestAdditions should match installed VirtualBox binaries.
Consider also upgrading Vagrant, if was installed via Homebrew, try:
brew cask update
brew install Caskroom/cask/vagrant # Or: brew cask install Caskroom/cask/vagrant
New VMs (with existing Vagrantfile
)
If this start happening for new VMs with existing Vagrantfile which was working before, the problem could be with downloading the metadata for your box (e.g. box was removed from your provider, e.g. Atlas) and this could cause fallback to the default settings, so make sure your config.vm.box
in your Vagrantfile
is pointing to the valid VM box or you've some temporary network problems.
For more details and Troubleshooting, check: Oracle VM VirtualBox User Manual PDF.