Shortcut to exit scale mode in VirtualBox

To exit Scale Mode, press:

Right Ctrl (Host Key) + c

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Note that your (Host Key) may be different from Right Ctrl. To check the current binding, go to VirtualBox Preferences > Input > Virtual Machine > Host Key Combination.

If Right Ctrl (Host Key) + C does not work (there have been some issues on Ubuntu), do the following:

1) File > Preferences > Input on the Virtual Machine which is stuck in Scale Mode

2) Change or Reset the Host Key. There's no need to even save after changing the settings

3) Re-open the Virtual Machine and it should be reset!

Steps:

• host + f, to switch to full screen mode, if not yet,
• host + c, to switch to/out of scaled mode,
• host + f, to switch back normal size, if need,

Tip:

• host key, default to right ctrl, the control button on right part of your keyboard,
• host + c seems only work in fullscreen mode,