What does the 'x509 certificate signed by unknown authority' error mean when connecting via Cloudflare?

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Grade: Education Subject: Support

Asked by: USER8967

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USER5328

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(261)

This error typically means your server's SSL certificate is either self-signed or signed by a Certificate Authority (CA) that your client (e.g., web browser, API client) doesn't trust. The client doesn't have the root certificate for that CA in its trust store.

Answered on 29 Agustus 2025

What does the 'x509 certificate signed by unknown authority' error mean when connecting via Cloudflare?

Question

Answer (103)

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