How to Update Trusted Sites on Windows

1. In the Start Menu, type 'Internet Options'

2. Click Security > Trusted Sites and then the box which says 'Sites'

3. In this page, untick 'Require server verification (https:) for all sites in this zone' to let you add internal servers for file shares and any other non-website sources

Then add in the required site(s) and you should have access to your destination.