Troubleshooting black screen during screen sharing

The black screen during screen sharing could be caused by a graphics card with automatic-graphics switching (such as an Nvidia card).

1. In the Windows Control Panel, open Nvidia Control Panel.
2. Click Manage 3D Settings.
3. Click Program Settings under I would like to use the following 3D settings.
4. Under Select a program to customize, add Cpthost.exe from the Zoom bin directory.
5. Click Add.
6. Find Cpthost.exe from the Zoom bin directory (located at C:/>Users>YOURUSERNAME>AppData>Roaming>Zoom>bin).
7. Click Add Selected Program.
8. Under Preferred Graphics Processor, select Integrated graphics
9. Click Apply.
10. Try screen sharing again with Zoom.