The actual result:
At step5,As for First Link, we see expected dialog with "Application Blocked for Security" dialog and there should be "Failed to validate certificate" inside the dialog (refer to first.jpg) , but there's another blocked dialog(refer to second.jpg) shown up after clicking OK .Is the second blocked dialog expected?

by the way, For others link, we see expected dialog with "Application Blocked for Security" dialog and there should be "Failed to validate certificate" inside the dialog, and do not see second.jpg after clicking OK on the dialog.