Duo / Resolve Duo prompt display issues

Objective

  • To provide instruction on resolving issues with the Duo prompt not displaying correctly

Environment

  • 312306: Duo Security Two-factor Authentication
  • Apple IOS / Mobile Devices / Phone / Tablet
  • Mac OS X / OSX / Computer

Resolution 

While attempting to log in to a Duo-protected application, the Duo prompt may not display correctly or give one of the following errors, 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

 

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