526 Invalid SSL certificate

Website, Application, Performance Security
1

Answer these questions to help the Community help you with Security questions.

What is the domain name?
https://demo.pinpools.site/admin

Have you searched for an answer?
yes

Please share your search results url:

When you tested your domain, what were the results?

f3
f3679×1325 139 KB

Describe the issue you are having:
The certificate works correctly when the Cloudflare proxy is off, browser doesn’t show any errors. But when the proxy is on and SSL/TLS encryption mode = Full (strict) I have the error 526

What error message or number are you receiving?
526 Invalid SSL certificate

What steps have you taken to resolve the issue?

  1. Reset all Cloudflare cache
  2. Turned off the Cloudflare proxy

Was the site working with SSL prior to adding it to Cloudflare?
yes

What are the steps to reproduce the error:

Have you tried from another browser and/or incognito mode?
yes

Please attach a screenshot of the error:

3

The certificate listed in the screenshot was issued today, making it likely there wasn’t a valid server on the cert prior to that for whatever reason. When accessing the site now I don’t see a 526 error.

Does it still persist for you?

4

The certificate was issued 19/Feb/2024. I can’t keep a broken site, so it works because the Cloudflare proxy is off. But the issue is still present if I turn on the Cloudflare proxy, I will get the error

5

Hello!

Just wanted to check in here and see if you were able to resolve the issue you were having. At the moment I can see that Cloudflare proxy is turned on, and I’m not getting a 526 error as you initially reported.

6

Hi @micky,

The problem is not resolved. When you check it works in the mode
Cloudflare proxy = on; SSL/TLS encryption mode = Full

The issue I have in the mode
Cloudflare proxy = on; SSL/TLS encryption mode = Full (strict)

I turned off the Cloudflare proxy to give you the ability to check my real certificate which I use.

Thanks.

7

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