TLS 1.3 not working in chrome


#1

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?


#2

what is your domain?


#3

#4

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


#5

Ah that’s great, It must be me then. Is your chrome on draft 23 or final?


#6

it’s on “Default”, Chrome stable 71.0.3578.98


#7

Thanks for your help :slight_smile:


#8

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.


#9

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