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Hi, I m using [Custom certificate for CloudFlare Origin Certificate] for [HTTPS certificate] of my webapp.

However, i got an error message of [ERR_SSL_VERSION_OR_CIPHER_MISMATCH].

*I am using the custom certificate as per the guide in Section [Origin certificates] of page https://help.pythonanywhere.com/pages/Cloudflare/

i checked with cloudflare and below is their advice. Please assist. Thank you.

1. SSL/TLS protocol version: Make sure that your server is configured to use a compatible SSL/TLS protocol version. Cloudflare recommends using TLS 1.2 or higher.

2. Cipher mismatch: The error can also occur due to a cipher mismatch between your server and Cloudflare. Cloudflare recommends using the following ciphers:

3. TLS 1.2: ECDHE-ECDSA-AES256-GCM-SHA384, ECDHE-RSA-AES256-GCM-SHA384, ECDHE-ECDSA-AES128-GCM-SHA256, ECDHE-RSA-AES128-GCM-SHA256

4. TLS 1.3: TLS_AES_256_GCM_SHA384, TLS_CHACHA20_POLY1305_SHA256, TLS_AES_128_GCM_SHA256

Have a look at this help page.

yes. i followed the guide and set up the origin certificates but it did not work with error ERR_SSL_VERSION_OR_CIPHER_MISMATCH

What do you de exactly when you get that error?

Hi, fjl, I sent an email to support@pythonanywhere.com for the details of my configuration for your reference.

The email subject is [Need help for SSL error issue >>> ERR_SSL_VERSION_OR_CIPHER_MISMATCH]. The timing is around 8 hours ago for your easy searching. Not gonna specify the time because we are from different time zone.

Thank you in advance.

Ok, we will handle it there.