Subdomain stopped working, can't identify why

Website, Application, Performance Security
1

Hi,

I used to have a subdomain working on my website, redirecting to a CDN. I noticed that at some point it stopped working, potentially when I was updating the certificate around 6 months ago, but I’m not sure.

I get an error in all browsers. On Chrome it says:

This page can’t be found

No webpage was found for the web address: subdomain URL

HTTP ERROR 404

My current setup is that it is loaded into Cloudflare’s DNS. It used to be proxied but I’m trying to see now if removing the proxy makes a difference (so far it still doesn’t work).

My SSL certificate is a wildcard, and this subdomain is only one level (i.e. subdomain.website.com)

Does anyone know what else might be causing this issue and how I can get my subdomain working?

Thanks!

2

Hi @acloudflareuser123,

You mentioned turning the proxy off. That’s the best way to troubleshoot this, take Cloudflare out of the mix - make sure everything works with HTTPS as you want, then re-enable Cloudflare there.

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