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Recorded 21 Oct 2026 at 19:44 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

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

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.

What it said

Roadmap ID
523201
Status
In development
General availability target
November CY2026
Preview target
October CY2026
Products
Microsoft Purview
Clouds
Worldwide (Standard Multi-Tenant)
Release phases
General Availability
Platforms
Web
Added to the roadmap
5 Nov 2025 00:00 UTC
Last changed
14 Jul 2026 22:41 UTC

Source evidence when recorded

Microsoft 365 roadmap
IncompleteRead 21 Oct 2026 at 18:43 UTC

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Field-level log (8)

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  1. 21 Oct 2026 · 19:44:24 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  2. 18 Oct 2026 · 14:54:30 UTC Link: Purview/roadmap?topic=Purview&period=all#items
  3. 15 Oct 2026 · 14:22:54 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  4. 15 Oct 2026 · 13:21:54 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  5. 15 Oct 2026 · 12:20:54 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  6. 15 Oct 2026 · 11:19:54 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  7. 14 Oct 2026 · 11:54:40 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  8. 14 Oct 2026 · 11:22:42 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
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 20:03 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current