Does Genymotion Desktop work on macOS Catalina, and should I use QEMU or VirtualBox?
Mac Catalina
Catalina works with Genymotion Desktop, but on macOS the recommended hypervisor is now QEMU, not VirtualBox. If you are seeing the VirtualBox host-only network error, switching to QEMU is the preferred fix.
On Intel Macs, VirtualBox can still be used if needed, but mac M series does not support VirtualBox. If the issue appeared after a macOS upgrade, reinstalling or updating VirtualBox may help. See macOS - An error has occurred while trying to create a virtualbox host-only network interface and Get Started with Genymotion Desktop.
Are you using an Intel Mac or an Apple Silicon Mac?