Hey, We are facing the exact same issue too. The manual validation works and we receive the webhook data correctly. But after some time, the validation fails and we are unable to receive the webhook data. This is very critical to our business so, please let us know how to fix it.
Update: Now the Endpoint URL is not validating at all. Let us know how to fix this asap as this is very critical to us.
Hi @trainingevents
Sorry to hear that, are you still not able to validate your endpoint url?
I’m getting this issue.
I’m able to manually validate without an issue, but the automatic revalidation fails. Any ideas?
Hi @george4
Thanks for reaching out to us and welcome to our community, here is a link to our Docs on how to validate your endpoint and also please take a look at the Revalidation for revalidation details:
https://developers.zoom.us/docs/api/rest/webhook-reference/#validate-your-webhook-endpoint
https://developers.zoom.us/docs/api/rest/webhook-reference/#revalidation
@elisa.zoom I’m experiencing a similar issue with the revalidation of webhook for my Server-to-Server OAuth app.
I have followed the steps outlined in your documentation to validate my endpoint URLs. Initially, I successfully completed the manual validation process and received the confirmation. However, I have noticed that the automatic revalidation process fails, and I receive a notification stating, “Your webhook endpoint failed to respond to our validation request.”
Despite the manual validation being successful, I am puzzled as to why the automatic revalidation is not functioning as expected. Please advise me on any adjustments I should make to my configuration to resolve this issue This is the code I used for validation in NodeJs
const generateHash = (signingSecret, data) => crypto.createHmac('sha256', signingSecret).update(data).digest('hex')
const isValidZoomRequest = (options) => {
const { plainToken, signingSecret, headers, body } = options
const message = `v0:${headers['x-zm-request-timestamp']}:${JSON.stringify(body)}`
const hashForVerify = crypto.createHmac('sha256', signingSecret).update(message).digest('hex')
const signature = `v0=${hashForVerify}`
if (headers['x-zm-signature'] === signature) {
const hashForValidate = generateHash(signingSecret, plainToken)
return { plainToken, encryptedToken: hashForValidate }
}
}
Having the issue sporadically here as well. 99% of the time we have no issues with the revalidation, but over the last couple of months we have had 2 times when Zoom claims our side was unresponsive. However, our logs clearly show we did respond within 1 second with the correct data. We have a message now claiming that if this happens again the webhooks will stop working. This is a bit worrying. Worth noting we have this same sporadic issue on two of our accounts, where everything works great, and then randomly Zoom sends a failed validation email.
Hello Elisa,
I recently watched your YouTube video about Webhooks, and I found it very informative. I’ve been trying to implement the endpoint addition as demonstrated in your video, but I’ve encountered some challenges.
Unlike the ‘ngrok’ setup you mentioned, I’m using Zoho Flow, which is similar to Zapier. I’ve attached a screenshot for your reference.
However, in Zoho Flow, the payload response is captured. Please refer screenshot.
I would greatly appreciate your assistance with this issue. Thank you in advance.
1 Like
@elisa.zoom - Please help - thanks.
Hi @gopal2
Can you please make sure that Zoho Flow has the endpoint validation logic on their end?
Their endpoint has to be able to respond to us in order to validate your url
Same problem here. We have been receiving real time events with our endpoint url for months until July 8th. We are now being told URL validation failed. Try again later and are only receiving CDR information, no real time events. I have tried making a new url and rebuilding the app and get the same results. I have confirmed that everything is set correctly on my end and the URL is accessible. We even tried to point this at a known working system to no effect.
Hi @nsalomone
I’m sorry to hear you are having issues with your notification endpoint URL.
If you are still facing this issue and looking for some additional help, please start a new thread since this one has been closed and it is a little bit old and feel free to tag me 
Thanks
Elisa
This happens for my webhook approximately every 30 days. I go into my code and click revalidate. The first time, it fails, but the second time, it works. This will not work for 30 days. Can someone share the code so the system can try revalidating a few times before it disables it? It’s supposed to be automation but every 30 days it requires manual intervention. I followed the Zoom guides you posted in the email chain above on how to create a webhook properly. Thanks,