Install Virtualbox Extension pack in command line

– Open a command prompt as Administrator : Right-click on “Accessories\Command Prompt” and choose : Run As Administrator.
– CD C:\Program Files\Oracle\VirtualBox
– Make sure the ExtensionPack is located in the same directory
– C:\Program Files\Oracle\VirtualBox>VBoxManage.exe extpack install Oracle_VM_Virt
ualBox_Extension_Pack-4.0.4-70112.vbox-extpack

C:\Program Files\Oracle\VirtualBox>VBoxManage.exe extpack install Oracle_VM_VirtualBox_Extension_Pack-4.0.4-70112.vbox-extpack
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Successfully installed “Oracle VM VirtualBox Extension Pack”.