Chrome Mac - NET::ERR_CERT_AUTHORITY_INVALID
Chrome is reporting that DigiCert High Assurance EV Root CA root certificate had expired on July 2014. This issue can be address by following these steps:


Manually deleted my local copy of DigiCert High Assurance EV Root CA

(open Keychain Access, select keychains:login, select category: certificates, search for DigiCert, right click, delete)

Downloaded the real cert(s) from DigiCert Root Certificates - Download &amp; Test | DigiCert.com

Root Certificate Authority that the sites use:

DigiCert High Assurance EV Root CA 

Intermediate Certificate Authorities that the sites use:

DigiCert SHA2 Extended Validation Server CA 
DigiCert High Assurance CA-3


Added these certs to Keychain Access simply by double clicking them
If that doesn't work you can manually import via File > Import.




Use following link to test it:

DigiCert Root Certificates - Download &amp; Test | DigiCert.com