How do I stop this happening: ERR_SSL_PROTOCOL_ERROR

[Charliepan]

I keep getting that error message when trying to access various legitimate and safe websites via my phone. How to I solve this issue? It has to be something on the phone as other devices are not affected

[Charliepan]

It's not a cookies issue. Typing the url in full also makes no difference.
This has to be something to do with missing security protocol permissions in the Samsung software.

[Ginga_p]

Maybe something to do with credential certificates but thats something past me sorry

[Members_NKuKGRm]

I also has SSL protocol error on Samsung Internet recently to a specific website. However in my case the site could be accessed by Edge app only, but Chrome/Firefox/Samsung Internet all show the site as "not secure" and cannot access.

Also, I'll add that if I share my phone connection to my laptop, then run "Fiddler2" (a web proxy) there, allow remote connection and open the ports, and then set the phone to access the web through this proxy, I can access the website again.

So in my case, I believe it's a transparent proxy issue caused by ISP.

[bigmouse1]

I assume you have already checked these things.

• Conflicting third-party browser extensions

• Unstable or poor internet connection

• Misconfigured proxy settings

• Outdated SSL/TLS protocol version

• Incorrect system date and time

• Encryption protocol mismatch between the server and client

• Use of an insecure or improperly installed SSL certificate

If not follow this guide - https://certera.com/blog/how-to-fix-err-ssl-protocol-error-in-chrome/

And if you are still getting this error, check if there's an OS update. Your device might be missing the latest Root certificates.