Update 2021: You must HOLD the RIGHT CTRL KEY while moving the mouse to escape the Virtual Machine. I don't know about sharing files between guest/host without installing the guest utils however you can disable/enable input capture by going to Edit->Preferences->Input and then under 'Cursor' uncheck 'Ungrab when cursor leaves window'.0 How do I exit VirtualBox mouse capture windows? How do I turn off auto capture in VMware?

Go to Preferences → Input, and make sure the 'Auto Capture Keyboard' is disabled. How do I turn off Auto capture keyboard in VM? To release the keyboard and mouse back to the primary OS, press Ctrl+Alt. When the keyboard and mouse input is captured in the virtual machine, you cannot move the pointer out of the virtual machine window and all keystrokes and button clicks go to the virtual machine.

How do I get out of keyboard capture in VirtualBox?

We were able to demonstrate how to correct the Vmware Virtualbox Auto Capture Keyboard Exit bug by looking at a variety of examples taken from the real world.

Mouse stuck in virtualbox windows