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This question already has an answer here:

I have a Windows Server 2008 VirtualBox VM guest, which I run in vboxHeadless mode. The host is Linux 64-bit. The VirtualBox version is 4.2.12r84980.

The VM loads fine, and I am presented with the "windows server" greeting screen. That is, I have to press Alt + Ctrl + Del to log on.

I have tried numerous ways to send Alt + Ctrl + Del:

  • Remote desktop to the VM from the port that is assigned by VirtualBox headless. That is, <VirtualBox host IP address>: VMguestPort. A-C-D doesn't work as the key sequence gets intercepted by the client PC at which I'm sitting and trying to log on to the VM guest.

  • Remote desktop directly to the VM <Windows Server 2008 VM guest IP address>:3389 doesn't work for the same reason.

  • phpVirtualBox gives an a button to send A-C-D to a VM guest. This doesn't work either.

  • I read that from a command line I could use the command

    VBoxManage controlvm win2k8_64 keyboardputscancode 1d 38 53
    VBoxManage controlvm win2k8_64 keyboardputscancode 9D B8 D3

for key press and then key release sequence. This doesn't work either.

Why do these work? Especially with a Windows Server 2008 as a VM guest?

The suggested previous answer does not work (pressing Alt + Ctrl + End does not work either) and also, as I am running a headless server, there isn't any change for me to see the VirtualBox GUI. The best I can get is the phpVirtualBox web interface and in VirtualBox there isn't any "right Ctrl" capture key.

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marked as duplicate by Oliver Salzburg Sep 6 '13 at 9:30

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

This has been answered here. – one.time Sep 5 '13 at 22:47

The default method is the Host+Del sequence in VirtualBox. The default host key binding is generally the right Ctrl key.


Additionally, you check/change your Host key binding within the Input section under File → Preferences in your VirtualBox Manager.

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