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KB5061977OOBOut-of-band release · 2025-05 OOB

Out-of-band release for Windows 11, version 24H2 and Windows Server 2025

Support article Update Catalog CVEs in Security CVE list for a ticket

Is it safe to deploy?

SupersededKB5061977OOB

Deploy the replacement for each Windows version instead: Windows 11, version 24H2: KB5132061; Windows Server 2025: KB5131080.

ChangeIntel's reading of public signals, not advice; check Microsoft's guidance and test before you deploy. Terms

Urgency Unknown · MSRC document not collected Risk Moderate
Everything in the May 2025 Patch Tuesday cycle
2Windows versions

MSRC's May 2025 security update document isn't collected, so the CVEs this update fixes are unknown. It includes the security fixes of KB5058411. No known issues affecting this update, or resolved by it, were identified in the collected Windows release health data.

Applies to

From Microsoft's release-information tables
Servicing branchOS buildReleaseAvailable
Windows 11, version 24H2 26100.4066 OOB 2025-05 OOB 27 May 2025
Windows Server 2025 26100.4066 OOB 2025-05 OOB 27 May 2025

What changed

  1. Issues resolved: Unknown: known-issue evidence is incomplete or retained → None in the collected release health data · Known issues: Unknown: known-issue evidence is incomplete or retained → None in the collected release health data
  2. Issues resolved: None in the collected release health data → Unknown: known-issue evidence is incomplete or retained · Known issues: None in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  3. Issues resolved: Unknown: known-issue evidence is incomplete or retained → None in the collected release health data · Known issues: Unknown: known-issue evidence is incomplete or retained → None in the collected release health data
  4. Issues resolved: None in the collected release health data → Unknown: known-issue evidence is incomplete or retained · Known issues: None in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  5. Issues resolved: Unknown: known-issue evidence is incomplete or retained → None in the collected release health data · Known issues: Unknown: known-issue evidence is incomplete or retained → None in the collected release health data
  6. Issues resolved: None in the collected release health data → Unknown: known-issue evidence is incomplete or retained · Known issues: None in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  7. Known issues: None in the collected release health data
  8. Included security update: None identified in the collected release tables → KB5058411 · Applies to: Windows Server 2025 → Windows 11, version 24H2, Windows Server 2025
  9. Included security update: KB5058411 → None identified in the collected release tables
  10. Issues resolved: Unknown: known-issue evidence is incomplete or retained → None in the collected release health data · Known issues: Unknown: known-issue evidence is incomplete or retained → None in the collected release health data
  11. Issues resolved: None in the collected release health data → Unknown: known-issue evidence is incomplete or retained · Known issues: None in the collected release health data → Unknown: known-issue evidence is incomplete or retained
Page history

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Cite this version
Field-level log (57)

Up to 100 recent field edits are shown; older edits may be outside retention.

  1. 7 Nov 2026 · 13:11:22 UTC Known issues resolvedUnknown: known-issue evidence is incomplete or retained → None in the collected release health data
  2. 7 Nov 2026 · 13:11:22 UTC Known issues affecting this updateUnknown: known-issue evidence is incomplete or retained → None in the collected release health data
  3. 7 Nov 2026 · 13:11:22 UTC Source coverage: windows-known-issuesIncomplete → Current
  4. 7 Nov 2026 · 12:08:21 UTC Known issues resolvedNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  5. 7 Nov 2026 · 12:08:21 UTC Known issues affecting this updateNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  6. 7 Nov 2026 · 12:08:21 UTC Source coverage: windows-known-issuesCurrent → Incomplete
  7. 6 Nov 2026 · 17:32:22 UTC Known issues resolvedUnknown: known-issue evidence is incomplete or retained → None in the collected release health data
  8. 6 Nov 2026 · 17:32:22 UTC Known issues affecting this updateUnknown: known-issue evidence is incomplete or retained → None in the collected release health data
  9. 6 Nov 2026 · 17:32:22 UTC Source coverage: windows-known-issuesIncomplete → Current
  10. 6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
  11. 6 Nov 2026 · 17:32:22 UTC Source coverage: windows-server-releasesIncomplete → Current
  12. 6 Nov 2026 · 17:32:22 UTC Source coverage: windows-11-releasesIncomplete → Current
  13. 6 Nov 2026 · 16:31:02 UTC Known issues resolvedNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  14. 6 Nov 2026 · 16:31:02 UTC Known issues affecting this updateNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  15. 6 Nov 2026 · 16:31:02 UTC Source coverage: windows-known-issuesCurrent → Incomplete
  16. 6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  17. 6 Nov 2026 · 16:31:02 UTC Source coverage: windows-server-releasesCurrent → Incomplete
  18. 6 Nov 2026 · 16:31:02 UTC Source coverage: windows-11-releasesCurrent → Incomplete
  19. 5 Nov 2026 · 23:42:03 UTC Known issues resolvedUnknown: known-issue evidence is incomplete or retained → None in the collected release health data
  20. 5 Nov 2026 · 23:42:03 UTC Known issues affecting this updateUnknown: known-issue evidence is incomplete or retained → None in the collected release health data
  21. 5 Nov 2026 · 23:42:03 UTC Source coverage: windows-known-issuesIncomplete → Current
  22. 5 Nov 2026 · 23:42:03 UTC Source coverage: windows-server-releasesIncomplete → Current
  23. 5 Nov 2026 · 23:42:03 UTC Source coverage: windows-11-releasesIncomplete → Current
  24. 5 Nov 2026 · 22:41:52 UTC Known issues resolvedNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  25. 5 Nov 2026 · 22:41:52 UTC Known issues affecting this updateNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  26. 5 Nov 2026 · 22:41:52 UTC Source coverage: windows-known-issuesCurrent → Incomplete
  27. 5 Nov 2026 · 22:41:52 UTC Source coverage: windows-server-releasesCurrent → Incomplete
  28. 5 Nov 2026 · 22:41:52 UTC Source coverage: windows-11-releasesCurrent → Incomplete
  29. 2 Nov 2026 · 17:30:39 UTC Source coverage: msrc-cvrfIncomplete → Current
  30. 2 Nov 2026 · 16:27:39 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  31. 29 Oct 2026 · 20:19:26 UTC Known issues affecting this updateNone in the collected release health data
  32. 28 Oct 2026 · 13:54:09 UTC Source coverage: windows-server-releasesIncomplete → Current
  33. 28 Oct 2026 · 08:37:56 UTC Missing security releaseNone identified in collected security coverage → May 2025
  34. 28 Oct 2026 · 08:37:56 UTC CVEs listed directly for this KBNone in the collected security releases → Unknown: security evidence or the required release is incomplete
  35. 28 Oct 2026 · 08:37:56 UTC Included security updateNone identified in the collected release tables → KB5058411
  36. 28 Oct 2026 · 08:37:56 UTC CVEs fixedNone in the collected security releases → Unknown: security evidence or the required release is incomplete
  37. 28 Oct 2026 · 08:37:56 UTC Applies toWindows Server 2025 → Windows 11, version 24H2, Windows Server 2025
  38. 28 Oct 2026 · 08:37:56 UTC Windows versions and buildsWindows Server 2025: 26100.4066 (2025-05 OOB) → Windows 11, version 24H2: 26100.4066 (2025-05 OOB); Windows Server 2025: 26100.4066 (2025-05 OOB)
  39. 28 Oct 2026 · 08:37:56 UTC Source coverage: windows-server-releasesCurrent → Incomplete
  40. 28 Oct 2026 · 08:37:56 UTC Source coverage: windows-11-releasesCurrent
  41. 28 Oct 2026 · 08:37:56 UTC Link: Support articlehttps://support.microsoft.com/topic/may-27-2025-kb5061977-os-build-26100-4066-out-of-band-80725b43-c0a1-48a4-9b82-058efffb6228 → https://support.microsoft.com/help/5061977
  42. 28 Oct 2026 · 08:37:56 UTC SummaryWindows Server 2025: KB5061977 · 2025-05 OOB · OS build 26100.4066 → Windows 11, version 24H2: KB5061977 · 2025-05 OOB · OS build 26100.4066
  43. 26 Oct 2026 · 06:24:14 UTC Missing security releaseMay 2025 → None identified in collected security coverage
  44. 26 Oct 2026 · 06:24:14 UTC CVEs listed directly for this KBUnknown: security evidence or the required release is incomplete → None in the collected security releases
  45. 26 Oct 2026 · 06:24:14 UTC Included security updateKB5058411 → None identified in the collected release tables
  46. 26 Oct 2026 · 06:24:14 UTC CVEs fixedUnknown: security evidence or the required release is incomplete → None in the collected security releases
  47. 23 Oct 2026 · 09:33:49 UTC Known issues resolvedUnknown: known-issue evidence is incomplete or retained → None in the collected release health data
  48. 23 Oct 2026 · 09:33:49 UTC Known issues causedUnknown: known-issue evidence is incomplete or retained → None in the collected release health data
  49. 23 Oct 2026 · 09:33:49 UTC Source coverage: windows-known-issuesIncomplete → Current
  50. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
  51. 23 Oct 2026 · 09:33:49 UTC Source coverage: windows-server-releasesIncomplete → Current
  52. 23 Oct 2026 · 08:31:50 UTC Known issues resolvedNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  53. 23 Oct 2026 · 08:31:50 UTC Known issues causedNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  54. 23 Oct 2026 · 08:31:50 UTC Source coverage: windows-known-issuesCurrent → Incomplete
  55. 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  56. 23 Oct 2026 · 08:31:50 UTC Source coverage: windows-server-releasesCurrent → Incomplete
  57. 14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current
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 16:19 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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