Enable keyboard-grabbing (by clicking the keyboard icon in the toolbar) and you should be able to send any keys, including ctrl+alt+del. This works for me.
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How do I send a VNC session the three finger salute?
Enable keyboard-grabbing (by clicking the keyboard icon in the toolbar) and you should be able to send any keys, including ctrl+alt+del. This works for me.
Thanks! I thought that icon was "grayed out", and didn't try clicking on it.