How to import Certificate Authority on MAC

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How to download Computerisms Certificate Authority

  • Open your preferred browser and navigate to:
        http://help.computerisms.ca
  • Scroll down and Click on "Security Certificates"
  • Under the FAQ section right click on the first link and click on "Save Link As"
  • Save the file on your Desktop
    • Note: you can save the file anywhere you wish but this tutorial assumed that you saved it on your Desktop
  • MAC (quick notes)

SAFARI: Install certificate: help.computerisms.ca (downloads)

Select: FINDER Select: Applications Select: Utilities

Select: Keychain Access Select: Certificate Authority CHANGE SETTING: (always trust)

STAMP ICON: email client | Select: System Preferences Select:Internet Accounts

How to install Computerisms Certificate Authority into your MAC


  • locate the certificate that you downloaded earlier
  • change the file extension from ".pem" to ".cer"

  • Right click on the edited certificate and go: Open With>>Keychain Access(default)
  • Go to the system tab and find the Certificate
*Right click on the certificate and click on "Get Info"
*afterwards another window pops up that describes the certificate information
*Under the certificate image in the top left is a little triangle and the word "Trust"
*click on the triangle to show the permissions for the certificate and select Always Trust
*And your done!