526 Error from nowhere

Website, Application, Performance Security
1

What is the name of the domain?

tributiconsulting.it

What is the error number?

526

What is the error message?

Invalid SSL certificate

What is the issue you’re encountering

today out of nowhere my website went down. Actually i didn’t do any modification on website in last months

What steps have you taken to resolve the issue?

checked if the certificate are valid on https://www.sslshopper.com/ and are valid.
when i changed from strict to full looks like is solved but i’d like to know why i had this kind of problem.

What is the current SSL/TLS setting?

Full

What are the steps to reproduce the issue?

i don’t know

2

The SSL certificate on your origin server has probably just expired. You will need to renew it.

Full allows use of an invalid SSL certificate so is not secure. Renew the origin certificate and switch back to “Full (strict)”.

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3

The certificate will expire in 85 days says on https://www.sslshopper.com/

4

That’s the Cloudflare certificate. The certificate that has expired is on your origin server (behiond Cloudflare)

1 Like
5

How i can check it?

6

Depends on the server. You may be able to review your server dashboard if it’s something like cpanel enabled or view the certificate configured on the local machine or disable the proxy to connect directly. But it’s 99.99% likely this certificate has expired and needs to be renewed through whatever process is used to install / configure valid certs on that server (you may need to work with your service provider to update this cert or install a Cloudflare Origin certificate.

The 0.001 alternative case is the origin IP address of your server has changed and you’re pointed to the wrong host now in DNS.

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7

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