KB4586781: November 2020 monthly security update for Windows 10, version 20H2 and Windows 10, version 2004
Windows Build Decoder: What a Windows build number means: 10.0.26100.2314 is Windows 11 24H2 with the November 2024 update. Version, KB, support dates, updates behind.
Paste a Windows build number from winver, ver, a system inventory or a vulnerability scan:
10.0.26100.2314, 19045.5487, Microsoft Windows [Version 10.0.22631.4460], a KB number
or a version like 22H2. You get the Windows version (the same build is often a client and a server release),
the cumulative update it has, how many monthly security updates behind it is, and how long that version gets updates.
Versions, updates and dates come from Microsoft's release information for
Windows 11,
Windows 10 and
Windows Server, read 2026-10-29.
Try: 10.0.26100.2314, 19045.5487, 22631.4460, 20348, 17763, KB5046617, 22H2
KB4586781 is the November 2020 monthly security update, released 2020-11-10 (download). Installing it brings Windows to these builds:
| Build | Windows version | Released | Newer updates |
|---|---|---|---|
| 19042.630 | Windows 10, version 20H2 | 2020-11-10 | 30 monthly security updates since; latest 19042.2965 (KB5026361) |
| 19041.630 | Windows 10, version 2004 | 2020-11-10 | 13 monthly security updates since; latest 19041.1415 (KB5008212) |
Cumulative updates include everything before them, so the latest update for a version replaces this one.