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Recorded 4 Nov 2026 at 15:02 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 365 roadmapMicrosoft 365 roadmap

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.

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Field-level log (61)

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  1. 4 Nov 2026 · 15:02:25 UTC Last changed5 Nov 2025 00:00 UTC → 14 Jul 2026 22:41 UTC
  2. 4 Nov 2026 · 15:02:25 UTC Preview targetNot stated → October CY2026
  3. 4 Nov 2026 · 15:02:25 UTC General availability targetNot stated → November CY2026
  4. 4 Nov 2026 · 15:02:25 UTC Source coverage: merill-message-center-archiveCurrent → Not collected
  5. 4 Nov 2026 · 15:02:25 UTC Source coverage: microsoft-365-roadmapCurrent
  6. 4 Nov 2026 · 15:02:25 UTC Link: Microsoft Purview/roadmap?topic=Microsoft%20Purview&period=all#items → No longer listed in this observation
  7. 4 Nov 2026 · 15:02:25 UTC Link: Purview/roadmap?topic=Purview&period=all#items
  8. 4 Nov 2026 · 15:02:25 UTC Link: Microsoft roadmap entryhttps://www.microsoft.com/en-us/microsoft-365/roadmap?id=523201
  9. 4 Nov 2026 · 15:02:25 UTC SummaryMicrosoft Purview introduces the Classifier Simulation Mode, the first phase of the broader Classifier Health Monitoring Platform. → 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.
  10. 4 Nov 2026 · 13:26:53 UTC Last changed14 Jul 2026 22:41 UTC → 5 Nov 2025 00:00 UTC
  11. 4 Nov 2026 · 13:26:53 UTC Preview targetOctober CY2026 → Not stated
  12. 4 Nov 2026 · 13:26:53 UTC General availability targetNovember CY2026 → Not stated
  13. 4 Nov 2026 · 13:26:53 UTC Source coverage: microsoft-365-roadmapIncomplete → Not collected
  14. 4 Nov 2026 · 13:26:53 UTC Source coverage: merill-message-center-archiveCurrent
  15. 4 Nov 2026 · 13:26:53 UTC Link: Purview/roadmap?topic=Purview&period=all#items → No longer listed in this observation
  16. 4 Nov 2026 · 13:26:53 UTC Link: Microsoft roadmap entryhttps://www.microsoft.com/en-us/microsoft-365/roadmap?id=523201 → No longer listed in this observation
  17. 4 Nov 2026 · 13:26:53 UTC Link: Microsoft Purview/roadmap?topic=Microsoft%20Purview&period=all#items
  18. 4 Nov 2026 · 13:26:53 UTC SummaryMicrosoft 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. → Microsoft Purview introduces the Classifier Simulation Mode, the first phase of the broader Classifier Health Monitoring Platform.
  19. 4 Nov 2026 · 13:10:08 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  20. 4 Nov 2026 · 11:04:04 UTC Last changed5 Nov 2025 00:00 UTC → 14 Jul 2026 22:41 UTC
  21. 4 Nov 2026 · 11:04:04 UTC Preview targetNot stated → October CY2026
  22. 4 Nov 2026 · 11:04:04 UTC General availability targetNot stated → November CY2026
  23. 4 Nov 2026 · 11:04:04 UTC Source coverage: merill-message-center-archiveCurrent → Not collected
  24. 4 Nov 2026 · 11:04:04 UTC Source coverage: microsoft-365-roadmapCurrent
  25. 4 Nov 2026 · 11:04:04 UTC Link: Microsoft Purview/roadmap?topic=Microsoft%20Purview&period=all#items → No longer listed in this observation
  26. 4 Nov 2026 · 11:04:04 UTC Link: Purview/roadmap?topic=Purview&period=all#items
  27. 4 Nov 2026 · 11:04:04 UTC Link: Microsoft roadmap entryhttps://www.microsoft.com/en-us/microsoft-365/roadmap?id=523201
  28. 4 Nov 2026 · 11:04:04 UTC SummaryMicrosoft Purview introduces the Classifier Simulation Mode, the first phase of the broader Classifier Health Monitoring Platform. → 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.
  29. 4 Nov 2026 · 10:01:18 UTC Last changed14 Jul 2026 22:41 UTC → 5 Nov 2025 00:00 UTC
  30. 4 Nov 2026 · 10:01:18 UTC Preview targetOctober CY2026 → Not stated
  31. 4 Nov 2026 · 10:01:18 UTC General availability targetNovember CY2026 → Not stated
  32. 4 Nov 2026 · 10:01:18 UTC Source coverage: microsoft-365-roadmapIncomplete → Not collected
  33. 4 Nov 2026 · 10:01:18 UTC Source coverage: merill-message-center-archiveCurrent
  34. 4 Nov 2026 · 10:01:18 UTC Link: Purview/roadmap?topic=Purview&period=all#items → No longer listed in this observation
  35. 4 Nov 2026 · 10:01:18 UTC Link: Microsoft roadmap entryhttps://www.microsoft.com/en-us/microsoft-365/roadmap?id=523201 → No longer listed in this observation
  36. 4 Nov 2026 · 10:01:18 UTC Link: Microsoft Purview/roadmap?topic=Microsoft%20Purview&period=all#items
  37. 4 Nov 2026 · 10:01:18 UTC SummaryMicrosoft 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. → Microsoft Purview introduces the Classifier Simulation Mode, the first phase of the broader Classifier Health Monitoring Platform.
  38. 4 Nov 2026 · 07:16:39 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  39. 3 Nov 2026 · 10:16:39 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  40. 3 Nov 2026 · 09:13:39 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  41. 28 Oct 2026 · 08:37:56 UTC Link: Microsoft roadmap entryhttps://www.microsoft.com/microsoft-365/roadmap?id=523201 → https://www.microsoft.com/en-us/microsoft-365/roadmap?id=523201
  42. 26 Oct 2026 · 18:49:55 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  43. 26 Oct 2026 · 17:48:57 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  44. 26 Oct 2026 · 06:24:14 UTC Link: Microsoft 365 Message Center Archive by Merill Fernandohttps://mc.merill.net/message/RM523201
  45. 25 Oct 2026 · 20:06:13 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  46. 25 Oct 2026 · 18:13:50 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  47. 24 Oct 2026 · 11:31:34 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  48. 24 Oct 2026 · 09:51:08 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  49. 23 Oct 2026 · 09:33:49 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  50. 23 Oct 2026 · 08:31:50 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  51. 22 Oct 2026 · 18:42:24 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  52. 22 Oct 2026 · 17:41:25 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  53. 21 Oct 2026 · 20:45:25 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  54. 21 Oct 2026 · 19:44:24 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  55. 18 Oct 2026 · 14:54:30 UTC Link: Purview/roadmap?topic=Purview&period=all#items
  56. 15 Oct 2026 · 14:22:54 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  57. 15 Oct 2026 · 13:21:54 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  58. 15 Oct 2026 · 12:20:54 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  59. 15 Oct 2026 · 11:19:54 UTC Source coverage: microsoft-365-roadmapCurrent → Incomplete
  60. 14 Oct 2026 · 11:54:40 UTC Source coverage: microsoft-365-roadmapIncomplete → Current
  61. 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 21:06 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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