Broken Screen When Attendee is Sharing Desktop

Broken screen when attendee is sharing desktop.

Fix Webex screen tearing.

How to fix broken screen when desktop is shared in a meeting?


Some users with an NVIDIA graphics card may experience screen tearing within their Webex window. The results are torn incoming camera feeds and a torn self-view preview when your camera is set to mirror its image (see example below). 

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To fix this, follow the steps below:
  1. Close the Webex app.
  2. Locate the caret on the right side of the Task Bar. Click on this caret to open the menu. Right-click on the NVIDIA icon.
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  1. In the left menu, click on Manage 3D Settings (see image below for the following steps).
  2. Click on Program Settings. The list will take a few seconds to populate.
  3. Click on Add to add the Webex app executable to the list. In the Add menu, sort by Recently Used. Chose "Cisco Webex Service" and then click Add Selected Program.
  4. The pop-up will close and you will now be shown the application features that you can alter.
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  1. In the box labeled Specify the settings for this program, follow down the left column until you find the Feature called Antialiasing - Mode.
  2. In the Antialiasing - Mode row of the table, move to the next column, and click on the text. The text will likely have the default setting and read Use global setting.
  3. Choose Off from the list.
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  1. Click Apply in the bottom-right corner of the window.
  2. Open the Webex app and check that the problem has been resolved. 
  3. If you forgot the close the application before beginning, close Webex and reopen it to have the altered settings applied.
  4. If the problem persists, please reach out to

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