HTTP/3 (with QUIC) not working


I switched on HTTP/3 (with QUIC) about 10 days ago, and then I checked and it was working fine.

Today I check again, and it’s not working! I checked Cloudflare’s control panel and it is still on.

I get this message:


Could anyone explain me what could be happening? I did upgrade my server’s software (CentOS), WP, etc, but I reckon it has nothing to do with this issue.

Might be an issue with that service.

Your site checks out fine at as well as on Firefox


Thanks Sandro!

It seems to be that isn’t working well. I didn’t even think that this could be the cause.

I donwloaded firefox nightly, that has an addon that shows http/3 pages, and mine has it activated. Also

Well, thanks for your time!