Privacy error while clicking on the Appian login link "Your connection is not private"

Privacy error while clicking on the Appian login link:

Receiving the below screenshot error while hitting the Appian login basic link. After clicking on the login url we are receiving "Your connection is not private" error (full error message is as per the below screenshot). 

We are always made to click on the "Advanced" option and then only the login page showing username and password appears. Please suggest how to avoid this privacy error everytime and how to go directly to the login page.

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