# Webhook notifications seem not to work occasionally

**URL:** <https://devforum.zoom.us/t/webhook-notifications-seem-not-to-work-occasionally/75986>\
**Category:** Meetings\
**Created:** [September 15, 2022, 2:39pm UTC](https://devforum.zoom.us/t/webhook-notifications-seem-not-to-work-occasionally/75986 "2022-09-15T14:39:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mingaku](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/mingaku/32/41363_2.png) [@mingaku](https://devforum.zoom.us/u/mingaku)\
**Post date:** [September 15, 2022, 2:39pm UTC](https://devforum.zoom.us/t/webhook-notifications-seem-not-to-work-occasionally/75986/1 "2022-09-15T14:39:02Z")

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Hi, folks! I’ve been experiencing a problem as title for about 3 weeks. I’ve assigned functions to notification endpoints of Participant/Host joined/left meeting. I’ve been missing those notifications occasionally like this:

- joined notification of a participant is sent but left one of the same participant is missing
- left notification of a participant is sent but joined one of the same participant is missing
- other participants are not affected, both notifications are sent

I made sure that Firewall/VPN of my application are not concerned. I have no idea why suddenly this problem happened and I can’t find how to reproduce.

Could you suggest anything? Thanks in advance.

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**Author:** ![elisa.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elisa.zoom/32/47836_2.png) [@elisa.zoom](https://devforum.zoom.us/u/elisa.zoom)\
**Post date:** [September 19, 2022, 9:12pm UTC](https://devforum.zoom.us/t/webhook-notifications-seem-not-to-work-occasionally/75986/2 "2022-09-19T21:12:35Z")

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Hi @mingaku  
Thanks for reaching out to the Zoom Developer Forum, I am happy to help here!  
Could you please confirm if you are still experiencing this issue?