Browser security errors › Chrome and Edge
ERR_SSL_OBSOLETE_VERSION: how to fix it on your website
The server only offers TLS 1.0 or 1.1, which browsers no longer accept.
What your visitors see
A warning or failure to load.
Common causes
- Old server software or load balancer configuration
- Outdated TLS policy on a cloud load balancer
How to fix it
- Enable TLS 1.2 and 1.3 and disable 1.0 and 1.1
- Update the load balancer TLS policy
- Upgrade OpenSSL and the web server if they cannot do TLS 1.2
Check your certificate and TLS setup
Korrali Web scans your site for certificate, TLS and security header problems and can monitor it so you hear about expiry before visitors do.