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Recorded 23 Oct 2026 at 08:31 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.

Windows updateMicrosoft release information, MSRC and Windows release health

KB5099538

Windows 10, version 1809: KB5099538 · 2026-07 B · OS build 17763.9020

What it said

KB
KB5099538
Windows versions and builds
Windows 10, version 1809: 17763.9020 (2026-07 B); Windows Server 2019: 17763.9020 (2026-07 B)
Applies to
Windows 10, version 1809, Windows Server 2019, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 (Server Core installation)
Restart required
Yes
CVEs fixed
CVE-2026-59116
Known issues caused
Unknown: known-issue evidence is incomplete or retained
Known issues resolved
Unknown: known-issue evidence is incomplete or retained
Included security update
None identified in the collected release tables
CVEs listed directly for this KB
CVE-2026-59116
Missing security release
July 2026
Published
14 Jul 2026 00:00 UTC

Source evidence when recorded

Windows 10 releases
IncompleteRead 23 Oct 2026 at 08:14 UTC
Windows Server releases
IncompleteRead 23 Oct 2026 at 08:14 UTC
Microsoft security releases
IncompleteRead 23 Oct 2026 at 08:14 UTC
Windows known issues
IncompleteRead 23 Oct 2026 at 08:14 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

What changed

  1. 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
  2. Restart required: Not stated in collected security fixes → Yes · Applies to: Windows 10, version 1809, Windows Server 2019 → Windows 10, version 1809, Windows Server 2019, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 (Server Core installation)
Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version
Field-level log (12)

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

  1. 23 Oct 2026 · 08:31:50 UTC Known issues resolvedNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  2. 23 Oct 2026 · 08:31:50 UTC Known issues causedNone in the collected release health data → Unknown: known-issue evidence is incomplete or retained
  3. 23 Oct 2026 · 08:31:50 UTC Source coverage: windows-known-issuesCurrent → Incomplete
  4. 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  5. 23 Oct 2026 · 08:31:50 UTC Source coverage: windows-server-releasesCurrent → Incomplete
  6. 23 Oct 2026 · 08:31:50 UTC Source coverage: windows-10-releasesCurrent → Incomplete
  7. 14 Oct 2026 · 11:22:42 UTC CVEs listed directly for this KBUnknown: security evidence or the required release is incomplete → CVE-2026-59116
  8. 14 Oct 2026 · 11:22:42 UTC CVEs fixedUnknown: security evidence or the required release is incomplete → CVE-2026-59116
  9. 14 Oct 2026 · 11:22:42 UTC Restart requiredNot stated in collected security fixes → Yes
  10. 14 Oct 2026 · 11:22:42 UTC Applies toWindows 10, version 1809, Windows Server 2019 → Windows 10, version 1809, Windows Server 2019, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 (Server Core installation)
  11. 14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current
  12. 14 Oct 2026 · 11:22:42 UTC Link: CVE-2026-59116/security/cve/CVE-2026-59116
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 15:16 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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