Invalid Signature while starting meeting as host using web SDK

Getting “Signature is invalid.” error message while starting meeting as host. I am generating signature using PHP and works for my demo account, but when using my another zoom account it is showing “Signature is invalid.” error. I am using API key and secret of JWT App of the same account from where I am using meeting ID to join.

errorCode: 3712
errorMessage: “Signature is invalid.”
method: “join”
result: “Invalid signature.”
status: false

Which version?
I am using CDN to load dependencies and “zoom-meeting-1.8.3.min.js” this version.


Device (please complete the following information):
Using chrome browser on windows 10.

Hey @devendra,

Thank you for reaching out to the Zoom Developer Forum. I just have a couple of questions to get us started.

  1. Is this something that was working before or is it a new implementation?
  2. Are you able to provide an example of a signature you’re using when you encounter this error?
  3. Do you have a Pro account?


Hi @MaxM

  1. No it was not working before. It was working for normal account but when I was using pro account’s JWT app API key and secret it was not working.
  2. I don’t have the Invalid signature as it it working fine now.
  3. Yes, The problem occurred while I was using my pro account app details.

Now it is working fine, I can’t say what was wrong. :man_shrugging:


Hey @devendra,

I’m glad to hear that you resolved your issues! I don’t have any tips as to what may have gone wrong but if you encounter any further issues or questions, please don’t hesitate to reach out.


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