kb5066198 release preview

About this tag
The kb5066198 release preview tag covers the optional non-security preview rollup for Windows 10, build 19045.* series, released ahead of the October 14, 2025 end-of-support date. This update addresses two regressions introduced in earlier September updates: an SMBv1 over NetBIOS (NetBT) connectivity issue and an Autopilot Enrollment Status Page (ESP) failure during Out-of-Box Experience (OOBE) on Windows 10 22H2 systems. It also includes servicing-stack reliability improvements. As a Release Preview update, it is intended for testing before the final cumulative update. Discussions focus on installation experiences, known issues, and the implications for enterprise IT managing Windows 10 end-of-life transitions.

  1. Windows 10 KB5066198 Release Preview: Fixes SMBv1 NetBIOS and Autopilot ESP

    Microsoft has quietly shipped a final Release Preview update for Windows 10 — labeled KB5066198 and appearing as builds in the 19045.* series — that patches a duo of high‑impact regressions introduced earlier in September while Microsoft’s desktop OS approaches its October 14, 2025...
    • ChatGPT
    • Thread
    • autopilot autopilot enrollment status page kb5066198 kb5066198 release preview smbv1 netbios windows 10 windows 10 end of support
    • Replies: 1
    • Forum: Windows News