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Hi @Praveen_badam, if you go to Error codes and messages for meetings and webinars, error 5003 is a Connectivity issue with Zoom's servers. Per our KB article for troubleshooting this error try the following
Let me know if this helps! 😄
I am having exactly the same issue. I get error 5003 but this is a new problem when there have been no changes to my internet access. The error happens now on my home network and work network. No antivirus running and no changes to firewall security and no changes in network providers.
Also, I can connect fine through my browser, just not through the computer client/app