I am running VMware Fusion Player Version 12.2.0 (18760249) on an I mac Pro (2017) with OS 11.6 Big Sur. I have two additional monitors via the Thunderbolt C ports on the back of the I mac. When I place the guest os Win 10 version 1909 with all the updates into UNITY, I get a VMware message popup that says: Display Topology update request could not be completed in guest. Then the monitor goes back to single window. This just started happening recently. Before I would get the message, but it would still go into UNITY.