While attempting to log in to a Duo-protected application on iOS or macOS, the Duo Prompt does not display as expected:
To fix this issue:
iOS 12 or newer:
- Navigate to Settings > Screen Time > Content & Privacy Restrictions > Content Restrictions > Web Content.
- Uncheck Limit Adult Websites to completely disable content restrictions.
iOS 11 or older:
- Go to Settings > General > Restrictions > Websites.
- Uncheck Limit Adult Content to completely disable content restrictions.
macOS 10.15 (Catalina) or higher:
- Open System Preferences.
- Navigate to Screen Time > Preferences > Content & Privacy.
- Set any Web Content restrictions to Unrestricted access.