An error occurred while trying to rate the website using the webfiltering service

This problem prevented all users on the network from viewing any web pages through an internet browser.

an error occurred while trying to rate this website.JPG

The firewall subscription for Anti-Virus, SPAM and Webfiltering expired.

Temporarily disabling web filtering service or renewing the subscription through the firewall web utility will resolve the issue.
Also you can try disabling AntiVirus and any other expired services.

disable web filtering.JPG

If this fails you can re-enable Web Filtering and then enable the Allow Websites When a Rating Error Occurs for each web filter that is in use