Step 1. Edit a Group Policy Object (GPO) that applies to the users you want to configure URL blocking. Step 2. Navigate to User Configuration > Policies > Windows Settings > Internet Explorer Maintenance > Security and then click on the “Security Zones and Content Ratings” Step 3. Select “Import the current Content Ratings settings” and then click on the “Modify Settings” button Step 4. Click on the “Approved Sites” tab Step 5a (Black List). Type the name of the URL that you want to block in the “Allow this website” text field and then click “Never” then “OK”  Watch more details clearly on OGYoutube & AOS TV ... View more