HI,

I have a MacBook Pro (15-inch, 2017) 2.9 GHz running Big Sur 11.6. My guest OS is W10 v10.0.18363 Build 18363. The laptop is connected to a StarTech DK30CH2DPPD and has two ACER V226HQL attached to it. So with the laptop display I have 3 monitors.

My problem is with Unity, this is the first time I have ever tried it. When I start my guest OS, then change to Unity view, everything appears to work as expected. The Unity tool bar is added to the dock, I see my system tray Icons and can see all the apps in the Unity bar. In Unity when I  open Visio it shows a gray window where Visio should be running, with a thin black line around it. If I open the virtual machine library I can see Visio running inside it. This gray affect happens with all applications launched in Unity.

What have I done? Well I have read and tested every step in this forum and only one thing works. Run Unity without the StarTech and tow monitors, didn't try using a single monitor and the StarTech. So this helps narrow my problem down, but I would still expect Unity to work with the simplest of settings.

Then I tried:

• Uninstalling VM Tools and reinstalling
• Lowering display settings on monitor
• Turning off 3D acceleration
• Multiple other things noted throughout the forums and VM KB's

Thanks in advance your suggestions are appreciated. Maybe they will help the next guy too.

Bret