When screen sharing people see black screen

Hi Viren_Manek;

Believe is ISP related.

Change the QoS setting in Teams fixed the problems for us. 

Your tenant admin needs to change this:

Teams Admin> Meetings > Meeting Settings > Network 

Turn off -> Insert Quality of Service (QoS) markers for real-time media traffic

Also update Teams client to the latest version.

Log-out and log back in.

Restart your Teams app.

You may need to wait for the change to kick in.

Good luck.

Regards

Tenny