Safari can't verify the identity of the website

[peoplevoice]

After upgrading to "El Capitan".

Trying to visit some of my regular websites, I'm getting the message, safari can't verify the identity of the website.

But surprisingly the apple support is one of them as you can see below. How can I solve this issue?

Safari can't verify the identity of the website "support.apple.com"

 

[Proginoskes]

I suspect that that's a bug in Safari itself. My MacBook upgraded to Safari 9.0, and Safari couldn't get an Internet connection at a place with local WiFi. I had to run Firefox, which *did* recognize the signal, and then Safari worked after that.

 

[peoplevoice]

In Spotlight I typed "Keychain Access", then press Enter, select Preferences from the KeyChain many, and "Reset My Default Keychain".
After this all my problems were solved: Cannot send pictures through Messages, Cannot connect to App Store and iTunes, and now I have access to my usually visited websites.

Thanks