check before: 2025-11-01
Product:
Entra, Purview, Purview Communication Compliance, Purview compliance portal, Purview Information Protection
Platform:
Online, Web, World tenant
Status:
In development
Change type:
New feature, Admin impact
Links:
Details:
Summary:
Microsoft Purview introduces Classifier Simulation Mode, allowing admins to test custom classifiers on production data before publishing. Available via the compliance portal, it helps reduce false positives and improve performance. Rollout starts early November 2025, with health insights and optional simulation controls for admins.
Details:
[Introduction]
Microsoft Purview is introducing Classifier Simulation Mode, the first phase of the broader Classifier Health Monitoring Platform. This new capability allows admins to test and validate custom classifiers on production data before publishing. Simulation Mode enables admins to optimize classifier logic before deployment, helping in reducing false positives, scanning latency, and noisy matches. Admins will access simulation controls and classifier health insights directly in the Microsoft Purview compliance portal, making it easier to monitor and improve classifier performance in one centralized location.
This message is associated with Roadmap ID 523201.
[When this will happen:]
Targeted Release (Worldwide): Rollout begins early November 2025, completes by early December 2025.
General Availability (Worldwide): Rollout begins late February 2025, completes by late March 2026.
Change Category:
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Scope:
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Release Phase:
General Availability
Created:
2025-11-13
updated:
2025-11-13
Public Preview Start Date
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Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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linked item details
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summary for non-techies**
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Direct effects for Operations**
Inefficient Classifier Deployment
Publishing classifiers without simulation may lead to inefficient classifiers being deployed, resulting in high false positive rates and scanning latency.
- roles: Admins, Compliance Officers
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=523201
User Experience Degradation
Users may experience delays and inaccuracies in data classification due to the deployment of poorly optimized classifiers, affecting their workflow and trust in the system.
- roles: End Users, Data Analysts
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=523201
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 week ago ago
