If you are a user who has an older MAC computer who cannot connect to the MiraCosta websites, and you are getting the below screenshot, please follow the steps listed below to fix the issue.
Solution: Install the Intermediate Certificate
Click InCommonRSA ServerCa.cer to download the certificate, then double click on it to begin the installation. The
Keychain Access will launch The Add Certificates prompt will appear Click the Keychain drop-down menu and select
System Click Add
The Keychain Access window displays Double click InCommon RSA Server CA
Click the black-arrow to expand the Trust menu Set the When using this certificate option to Always Trust. Close the window
If prompted, enter your UserName and Password Click Update Settings