Resolve prompt display issues / Duo

Problem

• I need to resolve an issue with the Duo prompt not displaying correctly

Resolution 

• While attempting to log in to a Duo-protected application, the Duo prompt may not display correctly or give the following error, which is a result of content restrictions being enabled on the device
  • The Duo Universal Prompt may display a blank screen or give the following message: This site can't be reached

For macOS 10.15 or higher

1. Open System Preferences
2. Navigate to Screen Time > Preferences > Content & Privacy
3. Add duosecurity.com to the Allowed Websites Only list
   • If you prefer to remove all content restrictions, set any Web Content restrictions to Unrestricted access

For iOS 11 or older

1. Navigate to Settings > General > Restrictions > Websites
2. Add duosecurity.com to the allowed sites list
   • If you prefer to remove all content restrictions, uncheck Limit Adult Content

For iOS 12 or newer

1. Navigate to Settings > Screen Time > Content & Privacy Restrictions > Content Restrictions > Web Content
2. Add duosecurity.com to the allowed sites list
   • If you prefer to remove all content restrictions, uncheck Limit Adult Websites

User

• All current Miami University Students, Faculty, and Staff, plus Alumni, Retirees, and Emeriti are required to enroll in Duo

System

• 312306: Duo Security two-factor authentication
  • Duo Mobile App