Symptoms
When browsing to a domain's secure URL and the domain is behind CloudFlare, you receive an error similar to the following.
This site can’t provide a secure connection
www.domain.tld uses an unsupported protocol.
ERR_SSL_VERSION_OR_CIPHER_MISMATCH
Description
The error commonly occurs when the domain's encryption mode is not set to "Full (strict)" in CloudFlare.
Workaround
- Log in to the Cloudflare dashboard.
- Select your account and domain.
- Go to "SSL/TLS."
- Choose an encryption mode to "Full (strict)."
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