You receive a "Synchronization cannot continue unless Exchange Server security policies are applied" message on a Windows Mobile 6-based device that's connected to Exchange Online

When you click Start, and then click Messaging on a Windows Mobile 6-based device that's connected to Exchange Online in Office 365, you receive the following message: In the message, you click Attention required, and then you receive the following message: In the message, you click View Support Code, and the following support code is displayed:

This issue occurs if Exchange Online security policies aren't applied on the Windows Mobile 6-based device.

To resolve this issue, follow these steps:

1. On the Windows Mobile 6-based device, click Start, click Messaging, and then click Sync.
   
   You receive the following message:
   Exchange Server server_name must enforce security policies on your device to continue synchronizing. Do you want to continue?
2. Click OK.

For more information, see the following Microsoft Knowledge Base article:

Still need help? Go to the Office 365 Community website.