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Error Code 5003


Hello. Todat at 9 am I tried to launch zoom as usual for my lecture (direct link from school website). It tried to connect but failed several times with an error code 5003. Then tried to sign in but faced the same error code.

I searched for a fix and tried these:

Re-install updated version. Re-install previous version. Disable anti-virus. Check firewall settings. From command line: flush dns and related settings. Reboot the system. Try multiple DNS. Problem still persists.

I also tried to join lecture from android on same network and it works fine.

Can anyone help me solve this problem?


Community Champion | Customer
Community Champion | Customer

Hi Deniz222.


Try this: Sign out of all devices where you have your Zoom credentials active, change your password (retrieving it as if you forgot it), and then re-enter your credentials in the Zoom app.

You can also try to enter from zoom web, through different browsers.



Unfortunately, that did not fix the problem. Thanks for the advice anyway.


Hi @Deniz222, thank you for your contribution to the Zoom Community! 


Are you still experiencing issues with logging in to Zoom? If so, please let me know and I will do my best to assist! 


Zoom Community Team

Carla (she/her/hers)
Zoom Community Team
Have you heard of Zoom AI Companion?