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Invalid URL error all webhooks as of today 06th February.

  • February 6, 2026
  • 1 reply
  • 31 views

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We noticed today, for multiple clients, that our webhooks inside flows are not being sent to our Scripts, after checking we noticed the error `invalid url` when we try to send a test webhook.
We want to double check if it is an error coming from Klaviyo since we don’t see anything on https://status.klaviyo.com/

Best answer by Byrne C

Hi ​@Youssef B.,

I can confirm that the error message that you were seeing was unexpected behavior, and our team has worked to fix it. As of now, the incident has been resolved, and webhooks should be able to be created successfully, and fire without errors. Let me know if I can address any additional concerns.

1 reply

Byrne C
Community Manager
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  • Community Manager
  • Answer
  • February 9, 2026

Hi ​@Youssef B.,

I can confirm that the error message that you were seeing was unexpected behavior, and our team has worked to fix it. As of now, the incident has been resolved, and webhooks should be able to be created successfully, and fire without errors. Let me know if I can address any additional concerns.