Duo - 403 Forbidden

Issue Description

When a user attempts to access a service protected by SSO and Duo, they receive a 403 forbidden error. This issue occurs when the device's time date are out of sync with Duo.

Example

Outlook embedded browser:

Resolution

Windows 10 / Windows 11

Enable Automatic Date & Time Sync

1. Open Settings
   1. Press Windows + I, or select Start > Settings
2. Go to Time & Language
3. Turn ON the following options:
   1. Set time automatically
   2. Set time zone automatically
   3. 
4. (Recommended) Force a time sync:
   1. Scroll down and click Sync now
   2. You should see a message confirming the last successful sync
5. Close Settings and retry accessing the service

macOS

Enable Automatic Date & Time Sync

1. Click the Apple menu and select System Settings
2. Go to General > Date & Time
3. Enable the following options:
   1. Set time and date automatically
   2. Set time zone automatically using your current location
   3. 
4. If prompted, enter your Mac password to allow changes
5. Close settings and retry accessing the service