Firebase custom domain shows up Unsupported Protocol flag in the browser

I’m trying to set up the Firebase hosting + Cloudflare DNS and DNS/LTS.
I’m receiving ERR_SSL_VERSION_OR_CIPHER_MISMATCH error on the browser.

This site can’t provide a secure connection
**staging.panel.xxxxxxxxxxx.travel** uses an unsupported protocol.
ERR_SSL_VERSION_OR_CIPHER_MISMATCH

I’m using two Firebase projects to the same code project
In my another subdomain is working fine: panel.xxxxxx.travel

I set the SSL/TLS encryption mode to FULL, but still seen this issue.

A related topic here:

Hi @tyler.vortex,

Makes me think:

2 Likes

I got it. I changed to staging-panel.xxxx.travel and now it’s working.

1 Like