562342 – Microsoft Purview: Data Loss Prevention – Count of Labelled Documents Condition

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check before: 2026-06-01

Product:

Exchange, Purview, Purview Data Loss Prevention, Purview Information Protection

Platform:

Online, Web, World tenant

Status:

In development

Change type:

Links:

Details:

This release introduces a new condition for Exchange Online policies: “Count of labeled documents is greater than.” This condition evaluates the number of attachments in an email message that carry a matching sensitivity label. When the count exceeds a defined threshold, the DLP rule is triggered, and configured actions are applied. This capability enables detection of high-volume data exfiltration scenarios, where multiple sensitive files—individually low-risk—collectively represent a significant compliance or security risk. Existing conditions evaluate file content, but do not provide controls based on the volume of labeled attachments.

Change Category:
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Scope:
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Release Phase:
General Availability, Preview

Created:
2026-05-16

updated:
2026-05-16

Public Preview Start Date

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Docu to Check

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MS workload name

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summary for non-techies**

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Direct effects for Operations**

Data Loss Prevention Policy Changes
Without proper preparation, the new DLP condition may lead to unintended blocking of legitimate emails containing multiple labeled attachments, disrupting business communication.
   - roles: Compliance Officer, IT Support Specialist
   - references: https://techcommunity.microsoft.com/t5/security-compliance-identity/microsoft-purview-data-loss-prevention-dlp/ba-p/3651230

User Experience Degradation
Users may experience frustration and confusion if their emails are blocked due to the new DLP rules, leading to decreased productivity and potential loss of trust in IT systems.
   - roles: End User, IT Helpdesk Agent
   - references: https://www.forbes.com/sites/bernardmarr/2021/06/14/the-importance-of-user-experience-in-it/?sh=4b1c1c5e1c3b

Configutation Options**

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Data Protection**

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IT Security**

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explanation for non-techies**

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** AI generated content. This information must be reviewed before use.

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Last updated 1 month ago ago

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