Empty response from /report/webinars/{webinarId}/participants

Calling the /report/webinars/{webinarId}/participants with the UUID returns a 200 response but content is b’ ’ or empty.

There is no error message as valid response received just completely empty.

Which App Type (OAuth / Chatbot / JWT / Webhook)?

Which Endpoint/s?

How To Reproduce (If applicable)
Steps to reproduce the behavior:
def apiCallZoomWebAttend(zID, token):

endpoint = f"https://api.zoom.us/v2/webinars/{zID}/participants"

#endpoint = f"https://api.zoom.us/v2/past_webinars/{zID}/instances"

headersT = {"Authorization": f"Bearer {token}"}

r = requests.get(endpoint, headers= headersT)

return r

r = apiCallZoomWebAttend(UUID, rt)


Hi @pathwayctm.com ,

Happy to help! Can you clarify if it was previously working and at which point it stopped?


Thanks Gianni,

I have actually only tested it on this event. However the endpoint for the same event ‘/webinars/{zID}/registrants’ works fine and the exported CSV file shows the participants. Would it help if I provide the event ID?


Hello I was wondering if you had any updates @gianni.zoom? Thanks

Hi @pathwayctm.com ,

Is this a scheduled recurring webinar? If so, have you tried passing the instance id of the specific past webinar iteration you’re trying to query to this endpoint? https://marketplace.zoom.us/docs/api-reference/zoom-api/reports/reportwebinarparticipants

Calling this endpoint https://marketplace.zoom.us/docs/api-reference/zoom-api/webinars/webinarregistrants will show the registrants for the scheduled webinar.

If you want to see the the registrants of a past webinar, try passing the instance id of the scheduled recurring webinar to this endpoint https://marketplace.zoom.us/docs/api-reference/zoom-api/webinars/listwebinarparticipants .

If this is not the case and it is a singular past webinar not showing up via the 1st and 3rd endpoints I shared in the contents of this message, private message me the webinarId and I’ll do some further digging :slight_smile:


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