Cloudflare Origin Certificates are only trusted by Cloudflare, so hitting the origin directly in a browser always shows this error.
Cloudflare Origin Certificates are only trusted by Cloudflare, so hitting the origin directly in a browser always shows this error.
This is expected. Test the origin with an SSL tool set to ignore trust, or install a publicly-trusted certificate on the origin if it must be reachable directly.
Cloudflare has its own failure mode, but ERR_CERT_AUTHORITY_INVALID has a wider set of causes. The most common one overall is: The server serves only the leaf certificate and omits the intermediate bundle.
Concatenate the intermediate certificates after the leaf in the certificate file (fullchain, not cert) and reload the server. Desktop Chrome sometimes hides this via caching, so always confirm with an external check.
An external SSL check builds the chain from scratch with no local trust store shortcuts, so it shows a missing intermediate that your own browser may be silently caching around.
Cloudflare Origin Certificates are only trusted by Cloudflare, so hitting the origin directly in a browser always shows this error.
This is expected. Test the origin with an SSL tool set to ignore trust, or install a publicly-trusted certificate on the origin if it must be reachable directly.
The browser could not build a trust path from the certificate the server sent to a root it trusts. Usually the server is serving only the leaf certificate without its intermediates, or the certificate is self-signed.