When a user attempts to visit an invalid URL (does not resolve in DNS) and the Uncategorized category is set to Block on the WS, the user will incorrectly be shown a “Blocked due to category” error page. While the URL is likely ‘Uncategorized’, it would be more correct to show the user a splash screen for “Server Error Page” that explains “The web address you entered could not be found.” The “Blocked due to category” error page allows the user to submit a request for access to a URL that doesn’t exist, creates additional IT work orders, and wastes time.