Thanks,I've got a better workaround that doesn't require changing system files. Just add the URL to the Restricted zone in Internet Options. I've got a GIF showing how to do it here. To remove it later you just need to come back to the same dialog, select the URL from the list, and click remove.
Looks like what I need.
Can the dialog be slowed down?
It is flashing by so fast I can hardly read it.