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Windows 10 2016 build 14393.9514 (KB5129239) — release notes, known issues

Windows 10 2016 build 14393.9514 (KB5129239), released September 14, 2026. Microsoft's release details, known issues, related builds and every WindowsForum article and thread about it.

Windows 10 · 2016 · Release · Out-of-band update

September 14, 2026, 2026—KB5129239 (OS Build 14393.9514) Out-of-band

Release
Cumulative update
KB5129239 — Microsoft's article, opens in a new tab
Sep 14, 2026

All 2016 builds JSON — this build from the builds API

Known issues — reported on the forum

No problems reported on the forum for this build yet. Threads that name 14393.9514 or KB5129239 and describe a fault appear here automatically.

In the news

Fix KB5129195 Fixes Windows 11 RDS, Hyper-V and USB Audio Failures Sep 23, 2026 · names this build
Fix KB5002665 Fixes Excel 2016 Paste Only on MSI Installs Sep 18, 2026 · Windows 10 2016 coverage from this build's release window

Discussed on the forum

No member thread names 14393.9514 yet.

Search the forum for 14393.9514 Ask about this build

Facts

Build: 14393.9514
Version line: Windows 10 2016 (base 14393)
Channel: Release
Package: Cumulative update
Update: KB5129239 · Out-of-band update
Released: September 14, 2026 (Microsoft)

History — base 14393

14393.9514 Sep 14, 2026 · KB5129239
14393.9512 Sep 8, 2026 · KB5123099
14393.9418 Aug 11, 2026 · KB5120418
14393.9339 Jul 14, 2026 · KB5099535
14393.9234 Jun 9, 2026 · KB5094122
14393.9140 May 12, 2026 · KB5087537
14393.9062 Apr 19, 2026 · KB5091572
14393.9060 Apr 14, 2026 · KB5082198

All 190 builds of Windows 10 2016 ›

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