Blackboard Learn: Security Warning View The Full Article Issue: I am in Blackboard Learn and every time I navigate to another screen I get a Security Warning asking me if I want to view only the web page content that was delivered securely. Is there a way to turn this off Solution: Yes. In Internet Explorer choose Tools Internet Options. Select the Security Tab. Click Internet. Then click Custom Level. Find the setting for Display Mixed Content. Change it from Prompt to Enable.