maker675 wrote:In Windows10 the default key to give access to host is the button directly to the right of the spacebar.
In Wikipedia's article on
Apple keyboards, the
first picture shows there's two Command keys on both sides of the spacebar, and the "button directly to the right of the spacebar" as a right Command key. Same thing for an Apple "
Magic Keyboard". This isn't a Windows 10 function that 'gives access to the host'. Virtualbox handles that.
The key for switching back to the host or for activating guest Virtualbox window menu options while focus is in the guest is called the "host key". You can set the desired key as the "host key" in the main Virtualbox window, File menu(?), Preferences, Input, Virtual Machine tab, Host Key Combination. In Windows the default is Right-Ctrl. I don't know the Mac default, I guess it's Right-Command?
On a Windows host, to get to the Windows "app switcher" I would use the host key (or host key combination) first then the Windows Alt-Tab to switch apps from the keyboard, not try to do it all in one fell swoop. Host-key and app-switch are two different functions by two different programs, and there's probably some slight timing difference in the order your fingers hit the various keys, thus the apparent rare times the three-key-combination will work. If the right Command key gets hit a few microseconds before the left-Command-Tab, then Virtualbox kicks out of the guest to the host, then OSX switches apps. Do it the other way around, and the Left Command key combo goes into the guest, which if it's Windows, goes "Huh? What's that supposed to mean?", then Virtualbox may kick out to the host.
Do this in a two-step process. Host key first, then app switch.
FWIW I find that having the Host Key be Right-Ctrl on my Windows host interferes with typical Ctrl-key combos I need to do with my right hand. So I set my Host Key combo to Right-Ctrl-Right-Shift.