Block pages are displayed on user devices when Jamf policies restrict access to unauthorized or unsafe sites. Block pages cannot be customized. The block page users see varies based on operating system and browser:
Apple native block page: iOS/iPadOS without on-device content filter, macOS, and shared iPads
On-device content filter block page: iOS/iPadOS with on-device content filter
Jamf block page: Windows, ChromeOS
When using a browser other than Safari on an Apple device, users will see a blank page when trying to access blocked content.