When Screen is Shared, Others See a Blank or White Screen - Mac OS

Modified on Wed, 13 Apr 2022 at 12:50 AM

Mac Screen Sharing Permissions


When your presenter is on a Mac, and when he/she shared the screen, sometimes, it may not appear. The indications are as follows.

  • The preview is not appearing in the AV Controls panel for him/herself
  • Others are seeing a blank/white screen

This guide helps to fix the problem.



This problem arises due to Mac OS Permissions


Changing Mac Screen Sharing Permissions


  1. To change these preferences on your Mac, choose Apple menu  > System Preferences, click Security & Privacy  
  2. Select Screen Recording
  3. Click the Padlock button at the bottom left to open the options for editing
  4. Select the checkbox next to an app to allow it to record your screen (i.e. Google Chrome)
  5. If the app is not listed, add the app using the '+' button and make sure it is checked
    Note: Deselect the checkbox to turn off access for that app later on if needed
  6. Lock the permissions using the padlock
  7. Restart the browser



If you have upgraded the Mac OS or if the app is already listed, try the following.


Removing and Adding the App Back


  1. To change these preferences on your Mac, choose Apple menu  > System Preferences, click Security & Privacy  
  2. Select Screen Recording
  3. Click the Padlock button at the bottom left to open the options for editing
  4. Remove the added app (i.e. Google Chrome)
  5. Lock the permissions using the padlock, exit, and go to the options once more (the settings box may ask for this step by itself)
  6. Now, add the app using the '+' button and make sure it is checked
  7. Save the settings by locking the permissions
  8. Restart the browser



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