How to set up Ubuntu Display higher resolution with Guest addition CD image in VirtualBox

How to set up Ubuntu Display higher resolution with Guest addition CD image in VirtualBox

I get error Vboxclient: failed to register resizing support, rc=VERR INVALID FUNCTION

This problem is on 20.04.2 so 64-bit. However, resolutions work on 18.04.5 32-bit without Guest addition CD image.

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