Suddently getting PR_CONNECT_RESET_ERROR error (not server or endpoint issue)

[oliverhc]

What is the name of the domain?

senex.app

What is the error number?

n/a

What is the error message?

PR_CONNECT_RESET_ERROR

What is the issue you’re encountering

PR_CONNECT_RESET_ERROR

What steps have you taken to resolve the issue?

Restored server to previous version which I know worked.
Tried on multiple different endpoints.

Feel sure the issue may be with cloudflare.
Not made any changes to cloudflare.

Had made code changes to my project which may have triggered more refreshes etc but as mentioned, since restored.

[oliverhc]

Note - it does load and work fine when I navigate to the web address from the server, and shows the certificate. however doesn’t load or show as secure from external devices.

Also note I can navigate to the website using the IP from external devices succesfully

[cscharff]

Site loads fine for me in Chrome. You are using Firefox yeah? What happens with a different browser?

[oliverhc]

Thanks. It seems when I test off my LAN it works… perhaps security against or on my network?

[cscharff]

Does your LAN have a gateway of some kind like ZScaler or another security appliance that acts as a proxy for http traffic?

You might try disabling http3 in your Cloudflare account if so…

HTTP/3 (with QUIC) · Cloudflare Speed docs