Windows 10 2019 build 17763.7919 (KB5066586) — release notes, downloads, known issues

Windows 10 · 2019 · Release · Security update (Patch Tuesday)

Feature update to Windows 10, version 1809 (17763.7919)

Download amd64 — build 17763.7919 from UUP Dump, opens in a new tab Download x86 — build 17763.7919 from UUP Dump, opens in a new tab All 2019 builds JSON — this build from the builds API

AI summary

Writing the summary for this build…

Generated from the package's release notes and forum coverage. Verify against Microsoft's release-health page before acting on it.

No problems reported on the forum for this build yet. Threads that name 17763.7919 or KB5066586 and describe a fault appear here automatically.

Coverage October 2025 Exchange Server Security Updates: End of Public 2016/2019 SUs & Hybrid App Enforcement Oct 14, 2025 · Windows 10 2019 coverage from this build's release window
Coverage Exchange Server 2016/2019 End of Support: Migrate to SE or Online Now Oct 14, 2025 · Windows 10 2019 coverage from this build's release window
Coverage Office 2016 2019 End of Support: Move to Microsoft 365 or LTSC 2024 Oct 15, 2025 · Windows 10 2019 coverage from this build's release window
Coverage Office 2016 and 2019 End of Support 2025: Migration Paths and ESU Gap Explained Oct 20, 2025 · Windows 10 2019 coverage from this build's release window
Fix Patch Rockwell FactoryTalk Policy Manager for CVE-2024-22019 DoS vulnerability Nov 13, 2025 · Windows 10 2019 coverage from this build's release window