Part of screen black to the participants while sharing my windows (My viewboard apps)
Problem facing given as picture
I tested your scenario in my lab and find the same problem that the sharing screen (myViewBoard app) cannot be displayed completely. I also test screen sharing with the likes of Microsoft Edge and Excel. It works with no problem.
Due to myViewBoard is a third party app and Microsoft Teams can work well with other apps, the possible cause should be in myViewBoard side. So, it is suggested to consult myViewBoard support engineer about this problem.
Besides, as a workaround, please choose Screen when you want to share the screen of myViewBoard.
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