What causes err_ssl_protocol_error and how can I fix it?

[charlesrich]

I get err_ssl_protocol_error when trying to open several websites in Chrome. I’ve cleared cache, checked my system date/time, and disabled extensions, but the error keeps appearing. Looking for step-by-step fixes and how to diagnose whether it’s a site issue, browser setting, or network problem.

 

[sophiadasy]

ERR_SSL_PROTOCOL_ERROR usually happens when your browser can’t establish a secure connection with the website. Since you’ve already cleared cache, checked date/time, and disabled extensions, try these next steps:

1. Check Internet Security/Antivirus: Sometimes antivirus or firewall blocks SSL. Temporarily disable them to test.
2. Update Chrome: Make sure your browser is up to date.
3. Clear SSL State: Go to Settings > Advanced > Privacy & Security > Clear SSL state.
4. Try another network: If it works on another Wi-Fi or mobile hotspot, it might be your router or ISP.
5. Check the website: Use SSL Checker to see if the site’s SSL certificate is valid.

If none work, the problem could be on the website’s end.