MC779849Microsoft Purview | Data Loss Prevention: Oversharing popups enhancements on Microsoft Outlook Win32

Updated September 24, 2024: We have updated the rollout timeline below. Thank you for your patience.

Introducing two new Data Loss Prevention (DLP) Microsoft Exchange support predicates for DLP Policy tips and Oversharing popups features for Microsoft 365 E5 Compliance users: Message contains and Attachment contains. Unlike the broader Content contains DLP predicate that evaluated the entire email envelope, these new predicates are tailored for client-side evaluation of specific email components only (email body or attachments) and show DLP Policy tips and Oversharing popups accordingly in Microsoft Outlook Win32.

This message is associated with Microsoft 365 Roadmap ID 376999

When this will happen:

Public Preview: We will begin rolling out mid-April 2024 and expect to complete by late May 2024.

Standard Release: We will begin rolling out mid-September 2024 and expect to complete by late September 2024 (previously January 2025).

How this will affect your organization:

You can now create new DLP Policies or edit existing policies to include Policy tip and Oversharing popup features support for these new focused Message contains and Attachment contains predicates.

For more information, the following resources are available:

• Create and deploy a data loss prevention policy | Microsoft Learn
• Data loss prevention policy tip reference for Outlook for Microsoft 365 | Microsoft Learn
• Get started with oversharing pop ups | Microsoft Learn

What you need to do to prepare:

This rollout will happen automatically by the specified date with no admin action required.