Security Link error message "Authorization Denied - Failed to Retrieve Secure Gateway Certificate", Reference Code "403"

This indicates there is a problem accessing authorization, possibly due to failing to server communication issues. 

Here are some things to check:

1. Check to ensure your AutoAuth account is in good standing and not expired.
2. Ensure your AutoAuth credentials are complete and accurate on the Device Management tab of your Technician Profile Manager,  Especially check the password, it must be identical.
3. Try to connect again at a later time.