I have enabled TLS 1.3 on my site powered by Cloudflare. The issue i’m having is that it’s always using tls 1.2.
I have tried different machines with chrome and firefox (1.3 enabled). I forced minimum tls version in chrome to 1.3 but the site refuses to connect. Is there a compatibility issue with my site or are my browsers not working correctly?
what is your domain?
To me it’s working without changing any Chrome settings, and also ssllabs confirms it’s supported:
https://www.ssllabs.com/ssltest/analyze.html?d=www.cvo.co.uk&s=104.27.191.130&latest
Ah that’s great, It must be me then. Is your chrome on draft 23 or final?
it’s on “Default”, Chrome stable 71.0.3578.98
Thanks for your help 
make sure you’re not using an anti-virus software on your local computer with https/secure inspection enabled as it would man in the middle your connection between web browser and your sites. So if anti-virus software doesn’t support the proper TLS 1.3 version - draft vs final spec version etc, then you could be falling back to a TLS 1.2 connection.
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