Microsoft Purview | Data Loss Prevention – Additional diagnostics for Data Loss Prevention and Information Protection

Microsoft Purview is introducing new diagnostics for Data Loss Prevention and Information Protection, providing admins deeper insights into triggered policies for files and emails. Rolling out from January to May 2026, these tools require no action, cause no workflow impact, and are enabled by default. Introduction To help administrators troubleshoot Data Loss Prevention (DLP) and Information Protection issues more efficiently, we’re introducing new diagnostics in Microsoft Purview. These enhanced tools provide deeper visibility into why specific DLP or labeling policies are triggered for files and emails. This message is associated with Roadmap ID 547833. When this will happen: Public Preview: We will begin rolling out mid-January 2026 and expect to complete by mid-February 2026. General Availability (Worldwide): We will begin rolling out early April 2026 and expect to complete by early May 2026. How this affects your organization: Who is affected: Microsoft 365 administrators managing DLP, Information Protection labels, and Purview compliance operations. What will happen: What you can do to prepare: No action is required. Review the diagnostics experience at: Microsoft Purview Data Loss Prevention Diagnostics Microsoft Purview Information Protection Diagnostics Share these resources with compliance, helpdesk, or security teams. Update internal documentation if needed. As part of this update, administrators will gain insights into: Sensitive Information Types detected in a document or email Labels applied to a file DLP policies triggered based on content analysis The following diagnostics experiences will become available: DLP SharePoint Diagnostics – Analyze policy matches for SharePoint Online content DLP Exchange Online (EXO) Diagnostics – Validate DLP triggers for email scenarios Auto-Labeling Diagnostics for SharePoint and OneDrive – Review label assignment and policy alignment for stored files No impact to user workflows. No changes to existing configurations or policy enforcement. Diagnostics are enabled by default. View image in new tab Compliance considerations: No compliance considerations identified, review as appropriate for your organization. Message ID: MC1219791

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