How to release mouse capture in VirtualBox?

I'm on my MacbookPro and using TeamViewer for remote access to my 2k3 Server. On this server I installed VirtualBox to create a virtual machine. But now I stuck at this screen and no more can use my mouse.

How can I release the mouse capture?

Solution 1:

You need to press "host key" which is written in right bottom corner of VirtualBox window.

Looking at your screenshot its Right Ctrl.

Its not default Mac Command ⌘ because you are running VirtualBox on Windows host, which you are accessing using TeamViewer.

See virtualBox manual: link

Solution 2:

Press Control+Command+⌘ at the same time to release the mouse from the VirtualBox window.

Solution 3:

Control Alt Delete worked for me