# CRC Webhook Validation suddenly failing

**URL:** <https://devforum.zoom.us/t/crc-webhook-validation-suddenly-failing/142044>\
**Category:** API and Webhooks\
**Created:** [February 21, 2026, 6:33pm UTC](https://devforum.zoom.us/t/crc-webhook-validation-suddenly-failing/142044 "2026-02-21T18:33:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kupadhyaya](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kupadhyaya/32/35352_2.png) [@kupadhyaya](https://devforum.zoom.us/u/kupadhyaya)\
**Post date:** [February 21, 2026, 6:33pm UTC](https://devforum.zoom.us/t/crc-webhook-validation-suddenly-failing/142044/1 "2026-02-21T18:33:29Z")

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

Validate your webhook endpoint event

**Description**  
_We have a master account with multiple subaccounts and what we discovered as of 2/20/26, the CRC validation is failing across all our accounts in all environments. There hasn’t been any changes to our services and the validation logic or any new deployments. Logs show that we are receiving the CRC Validation Event, however there is no activity as far as sending the 200 response back to Zoom. We tried manually triggering the validation from the portal, but that is failing as well. We see the error below, I tried this again today and still the same issue. Can someone please assist?_

**Error?**

 ![image](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/4/9/498ce2919aafdd280b70a526469964424772cbcf.png)

_The full error message or issue you are running into, where applicable._

1. **How To Reproduce**  
_Steps to reproduce the behavior:_  
_1. CRC Validation event is received_

2. Our service determines what account its for and processes the request

3. Service sends back the required 200 response within the given time interval.

4. Validation for webhook is complete until the 72 hr interval for the re-validation

---

<div class="post-metadata">

**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:** [February 23, 2026, 2:23pm UTC](https://devforum.zoom.us/t/crc-webhook-validation-suddenly-failing/142044/2 "2026-02-23T14:23:32Z")

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Hi @kupadhyaya  
Thanks for reaching out to us and welcome back to our Zoom Developer Forum.

Have you made any changes to your app or regenerated your apps’s secret token?  
Can you also confirm you are following the Validation URL documentation to ensure endpoint URL validation?

> **[Using webhooks - API - Zoom Developer Docs](https://developers.zoom.us/docs/api/webhooks/#validate-your-webhook-endpoint)**
>
> Learn how to configure and implement webhooks to receive real-time Zoom events, verify webhook authenticity, and manage subscriptions via build flow or API.

I will send you a DM so you can provide more details about your app so I can look further into this