Hey friends,
Recently I've had this strange issue where I couldn't load certain certified websites due to cypher mismatch or browser telling me that the session is not secured properly.
At the beginning I thought this issue was due to certificates not being up to date or something like that, or even websites that might be hacked, tonight suddenly google had this issue.
So I did a little investigation as to why it happens, apparently some Antiviruses have the ability to scan SSL traffic to check for viruses, but doing so actually makes the browser think there is a man in the middle attack and claim the cypher is mismatched or that the session isn't properly secured.
If you have an issue that certified websites don't show up properly, check your antivirus for scan ssl traffic and cancel it, see if that fixes the issue.
Have fun browsing