520 error on CDN server

General
1

What is the name of the domain?

cdn.nicolodbrok.nl

What is the error number?

520

What is the error message?

Web server is returning an unknown error

What is the issue you’re encountering

My cdn randomly stopped working, nothing changed but I am now getting a 520 error.

What steps have you taken to resolve the issue?

I have tried setting the record to DNS only, completely redid the domain on cloudflare to start from scratch.
Turned on always online
Temporarily disabled Cloudflare
Redid my origin rule

What are the steps to reproduce the issue?

Simply going to https://cdn.nicolodbrok.nl

This cdn works fine on other domains used by my friend, which is on the same cdn server but has been able to add another domain just fine today. It is just my domain that is having issues.

The ray ID is: 8c49889feb96662e

2

Could anyone tell me how to include the HAR files? It only lets me upload images :slight_smile:

3

Pause Cloudflare, or set the DNS record to “DNS only”, so requests go direct to your origin server. Then you will be able to see the response from your origin that is causing Cloudflare to return 520. Fix it and once working, re-enable Cloudflare again.

4

Hi! I have done this but I still get a Cloudflare 520 error whenever it is disabled or on DNS only. Nothing changes.

5

Once paused, you need to wait a short while for the TTL to expire.

For me, I am getting a timeout when trying to connect to your origin while it is not proxied…
https://cf.sjr.org.uk/tools/check?5619ec5bf6044de8ad02c3a1f152eaa6#dns

6

Oh thank you!

Do you by any chance know what could be causing this? nicolodbrok.nl is just an empty domain on godaddy. nicolodbrok.nl itself does not have a landing page, would this be the issue? It is not connected to any web server. But my cdn subdomain is connected to a server that handles the CDN

7

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