Starting a meeting as a host with Web Zoom SDK says invalid signature

Hello there!

We’re integrating with Zoom SDK but whenever we try to start meeting through a signature that has role with “1” it says invalid signature, but starting a meeting outside then join a meeting with role “0” it does work.

We use version is 1.9.1 latest

Also we assume that creating one app for everyone is enough for all the users if we’re in the Pro plan, and the issue is not related that every user needs to give us his apikey and secret just like OAuth 2 submissions… Is this correct?

Steps to reproduce the behavior:

  1. Embed Zoom Web SDK With Pro Plan
  2. Generate Signature with Role ID 1 and the meeting is not started.
  3. Error Invalid signature appears
  4. Start meeting outside the zoom web sdk, join meeting with “0”… You’ll be able to join.
1 Like

Hey @MustafaAzmy,

Thank you for reaching out to the Zoom Developer Forum. You can only start a meeting as the host, using a role of 1, with the Web SDK so I would first make sure that the meeting isn’t already started.

If that doesn’t help, please send an email to with a link to this thread. In that email, please provide the signature that you’re using when you see that error.


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