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Error 5003 on brand new Mac but no error on other computers on the same network


I cant access the zoom app on a new macbook I just purchased due to error code 5003. I have a spectrum standard internet and router and do not have this problem on any other computer within the same network.  I have contacted my companies technology agent and they have never seen this issue before. We have tried reinstalling, updating, shutting down, and nothing has worked. 


Other things to note:

  • Firewall – OFF on macbook
  • Works on other devices on same network
  • MacBook is up to date on all OS updates
  • Account is accessible via web browser account login on

can someone help me as I need access to zoom for work.


Zoom Moderator
Zoom Moderator

Hey @Shola, give this a try: 

1. Close the Zoom app by click Quit Zoom.

2. Delete folder ~/Library/ApplicationSupport/
3. Delete file ~/Library/Preferences/
4. Terminate all cfprefsd processes. In Terminal, input following command:

killall cfprefsd

5. Uninstall Zoom

6. Reboot your Computer

6. Reinstall Zoom from


After finishing all the above steps, try logging into the Zoom app to see if it worked.


Leverage cool features and how to's from the Community Center. If my reply helped, don't forget to click the accept as solution button! ⤵️


I have the same problem, but it started two months after I started using my new Macbook Pro.  Zoom worked in the morning, but now I get the error every time I try to use Zoom.  I tried all these "solutions" but still have the problem.  Any other ideas?