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Microsoft Purview: Purview Information Protection | Classifier Simulation Mode (Health Monitoring)

Microsoft 365 Message Center Archive by Merill Fernando

Summary

Microsoft Purview introduces the Classifier Simulation Mode, the first phase of the broader Classifier Health Monitoring Platform. This capability enables you to test, analyze, and optimize custom classifiers on production data before publishing them, hence offering a reliable means of verifying the effectiveness of classifiers before committing them to live environments. Custom classifiers are powerful tools but can sometimes include inefficient regex patterns or overly broad logic, leading to Noisy classifier due to high matches, False positives and High scanning latency Simulation Mode mitigates these risks by allowing you to validate classifier quality and performance before publishing, helping ensure healthy, performant, and more precise classification outcomes.

Status
In development
General availability target
Nov 2026
Preview target
Oct 2026
Clouds
Worldwide (Standard Multi-Tenant)
Release phases
General Availability
Platforms
Web
Source created
5 Nov 2025
Source modified
14 Jul 2026 · 4mo ago
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 19:00 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current