Microsoft Purview DLP Gets Smarter Troubleshooting with Guided Diagnostics

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If you’ve ever tried to troubleshoot why a Data Loss Prevention (DLP) policy behaved the way it did, you’ll know it’s not always obvious what happened behind the scenes. Microsoft is looking to change that.

Microsoft is rolling out a new guided diagnostics experience in Microsoft Purview Data Loss Prevention (DLP), designed to help administrators quickly understand, diagnose, and resolve DLP policy issues. The goal is simple: make DLP behavior easier to explain, easier to fix, and easier to optimize.

This update is tracked under Microsoft 365 Roadmap ID 561032.

When is this coming?
  • Public Preview: Mid‑May 2026 to Mid‑June 2026
  • General Availability (Worldwide): Late June 2026 to July 2026
Who does this affect?

This update is primarily aimed at:

  • Microsoft 365 administrators managing DLP policies in Microsoft Purview
  • Commercial Microsoft 365 tenants

If your organization has Microsoft 365 E5 and Copilot licensing, you’ll also benefit from Security Copilot‑powered insights, which add intelligent recommendations during troubleshooting.

What’s changing?

A new guided diagnostics experience will appear directly in the Microsoft Purview portal, making it much easier to understand what your DLP policies are doing and why.

With this experience, admins can:

  • See the order in which DLP policies are evaluated
  • Understand which conditions were matched
  • Clearly identify what action was taken (allow, block, or audit)

In other words, instead of guessing or piecing together logs, you’ll get a clearer, step‑by‑step explanation of how a DLP decision was made.

Security Copilot‑powered insights (for eligible tenants)

For organizations with the right licensing, Microsoft brings Copilot into the experience to help:

  • Spot potential policy misconfigurations
  • Speed up DLP troubleshooting
  • Get recommendations for improving and optimizing policies
What’s not changing?
  • Existing DLP policies continue to work exactly as they do today
  • Enforcement behavior is unchanged
  • There is no impact on end‑user workflows

This update is purely about visibility and diagnostics, not policy enforcement.

That said, you may want to:

  • Update internal DLP troubleshooting documentation to reference the new guided diagnostics experience
  • Make sure your security and compliance teams are aware of the new diagnostics flow in the Purview portal
  • Review your Copilot and E5 licensing to understand whether Security Copilot‑powered insights will be available in your tenant

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