# Webhook validation failures even though it validates through the UI

**URL:** <https://devforum.zoom.us/t/webhook-validation-failures-even-though-it-validates-through-the-ui/129139>\
**Category:** API and Webhooks\
**Tags:** webhooks\
**Created:** [March 3, 2025, 11:55pm UTC](https://devforum.zoom.us/t/webhook-validation-failures-even-though-it-validates-through-the-ui/129139 "2025-03-03T23:55:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![SteveAtKoan](https://avatars.discourse-cdn.com/v4/letter/s/c68b51/32.png) [@SteveAtKoan](https://devforum.zoom.us/u/SteveAtKoan)\
**Post date:** [March 3, 2025, 11:55pm UTC](https://devforum.zoom.us/t/webhook-validation-failures-even-though-it-validates-through-the-ui/129139/1 "2025-03-03T23:55:29Z")

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**API Endpoint(s) and/or Zoom API Event(s)**

I have created webooks with event subscriptions, successfully validated them and successfully received callbacks.  
But now I am getting an email that says “Action Required… Your webhook endpoint failed to respond to our validation request. If your webhook endpoint fails to respond to our validation requests 2 more times, we will stop sending webhooks to your webhook endpoint until you fix the issue.”

But my webhook is working.

If I create another identical webhook by clicking the blue Add Event Subscription button, paste in the same url, and click Validate i see a green tick that says my webhook is validated ok.

I don’t understand why I’m getting the email messages saying my webhook is failing to validate… There are no logs on the Zoom side where i can check if there is an error message. Whe I look at my server logs I see a POST from zoom to my webhook endpoint that gets a 200 response, and a second one 3 minutes later. Both appear valid.

What should I do?

thanks  
Steve

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<div class="post-metadata">

**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:** [March 7, 2026, 3:31pm UTC](https://devforum.zoom.us/t/webhook-validation-failures-even-though-it-validates-through-the-ui/129139/2 "2026-03-07T15:31:49Z")

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