# Missing \`participant-leave\` webhook events

**URL:** <https://devforum.zoom.us/t/missing-participant-leave-webhook-events/61443>\
**Category:** API and Webhooks\
**Created:** [December 14, 2021, 4:03pm UTC](https://devforum.zoom.us/t/missing-participant-leave-webhook-events/61443 "2021-12-14T16:03:33Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![RickBob](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rickbob/32/19439_2.png) [@RickBob](https://devforum.zoom.us/u/RickBob)\
**Post date:** [December 14, 2021, 4:03pm UTC](https://devforum.zoom.us/t/missing-participant-leave-webhook-events/61443/1 "2021-12-14T16:03:33Z")

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## Using this template helps us debug your issues more effectively 🙂

**Description**  
We use participant join/leave webhooks to determine the amount of time two participants were engaged together in a meeting. Occasionally, albeit infrequently, we miss some `participant-leave` events making this calculation prone to error. Are there any mechanisms in place to have this process be more robust?

My issue seems to be similar to this thread:

> [@Did not received participant joined event, sometimes do not receive participant left event](https://devforum.zoom.us/t/did-not-received-participant-joined-event-sometimes-do-not-receive-participant-left-event/25697/3):
>
> Hi @tommy, Yes we are returning 200 after receiving zoom webhooks. Some webhooks are not received, else we are receiving most of the webhooks. But when we don’t receive webhook things at our end break. Please check.

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**Author:** ![gianni.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/gianni.zoom/32/32523_2.png) [@gianni.zoom](https://devforum.zoom.us/u/gianni.zoom)\
**Post date:** [December 14, 2021, 4:44pm UTC](https://devforum.zoom.us/t/missing-participant-leave-webhook-events/61443/2 "2021-12-14T16:44:53Z")

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Hi @RickBob ,

What the dates you noticed missed webhooks? At times, we have had outages that affected webhook delivery.

Best,  
Gianni

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**Author:** ![RickBob](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rickbob/32/19439_2.png) [@RickBob](https://devforum.zoom.us/u/RickBob)\
**Post date:** [December 14, 2021, 11:17pm UTC](https://devforum.zoom.us/t/missing-participant-leave-webhook-events/61443/3 "2021-12-14T23:17:57Z")

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Hi Gianni,  
We had a couple of incidents today 12/14/2021.

This first meeting was missing two join events

Meeting ID: [REDACTED]

|timestamp|event|  
|2021-12-08 1:29:22|registration-created|  
|2021-12-08 1:29:22|registration-created|  
|2021-12-14 6:51:37|recording-start|  
|2021-12-14 6:51:39|participant-join|  
|2021-12-14 6:52:45|participant-join|  
|2021-12-14 6:56:02|participant-join|  
|2021-12-14 7:46:23|participant-leave|  
|2021-12-14 7:53:27|participant-leave|  
|2021-12-14 7:53:44|participant-leave|  
|2021-12-14 7:53:46|participant-leave|  
|2021-12-14 7:53:58|participant-leave|  
|2021-12-14 8:03:27|recording-stop|

This second meeting was missing one leave event:

Meeting ID: [REDACTED]

|timestamp|event|  
|2021-12-10 14:57:23|registration-created|  
|2021-12-10 14:57:23|registration-created|  
|2021-12-14 13:29:52|recording-start|  
|2021-12-14 13:29:56|participant-join|  
|2021-12-14 13:30:48|participant-join|  
|2021-12-14 13:31:13|participant-join|  
|2021-12-14 13:31:57|participant-join|  
|2021-12-14 13:32:47|participant-leave|  
|2021-12-14 13:34:42|participant-join|  
|2021-12-14 13:35:13|participant-join|  
|2021-12-14 13:41:32|participant-leave|  
|2021-12-14 13:42:08|participant-join|  
|2021-12-14 13:56:50|participant-leave|  
|2021-12-14 13:57:53|participant-leave|  
|2021-12-14 13:57:57|participant-leave|  
|2021-12-14 13:57:58|participant-leave|  
|2021-12-14 14:02:10|recording-stop|

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<div class="post-metadata">

**Author:** ![donte.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/donte.zoom/32/24412_2.png) [@donte.zoom](https://devforum.zoom.us/u/donte.zoom)\
**Post date:** [December 28, 2021, 8:39pm UTC](https://devforum.zoom.us/t/missing-participant-leave-webhook-events/61443/4 "2021-12-28T20:39:38Z")

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Greetings, @RickBob,

Thank you for sharing that information. As a next step, would you be able to send your account details along with the missing Webhook Events to [developersupport@zoom.us](mailto:developersupport@zoom.us)? From there we can look at your account and see what may be happening.

Best,  
Donte

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [January 28, 2022, 6:39am UTC](https://devforum.zoom.us/t/missing-participant-leave-webhook-events/61443/5 "2022-01-28T06:39:54Z")

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Closed on January 28, 2022, 6:39am UTC

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