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Windows build 19043.1387: November 2021 optional preview (third week) (KB5007253)

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 2026-10-28.

Try: 10.0.26100.2314, 19045.5487, 22631.4460, 20348, 17763, KB5046617, 22H2

Windows 10, version 21H1

Build 19043, first released 2021-05-18

19043.1387 is the November 2021 optional preview (third week), released 2021-11-22 as KB5007253 (download).

13 monthly security updates behind. The latest is 19043.2364 (2022-12 B, 2022-12-13).

Support

All editions
No longer updated
Last update 19043.2364 (2022-12-13)

Windows 10 reached end of support on 2025-10-14. Devices enrolled in Extended Security Updates (ESU) still get security updates.

All 46 updates for build 19043
BuildUpdateReleasedKB
19043.2364 2022-12 Bmonthly security update 2022-12-13 KB5021233
19043.2311 2022-11 Coptional preview (third week) 2022-11-15 KB5020030
19043.2251 2022-11 Bmonthly security update 2022-11-08 KB5019959
19043.2194 2022-10 OOBout-of-band update 2022-10-28 KB5020953
19043.2193 2022-10 Coptional preview (third week) 2022-10-25 KB5018482
19043.2132 2022-10 OOBout-of-band update 2022-10-17 KB5020435
19043.2130 2022-10 Bmonthly security update 2022-10-11 KB5018410
19043.2075 2022-09 Coptional preview (third week) 2022-09-20 KB5017380
19043.2006 2022-09 Bmonthly security update 2022-09-13 KB5017308
19043.1949 2022-08 Coptional preview (third week) 2022-08-26 KB5016688
19043.1889 2022-08 Bmonthly security update 2022-08-09 KB5016616
19043.1865 2022-07 Coptional preview (third week) 2022-07-26 KB5015878
19043.1826 2022-07 Bmonthly security update 2022-07-12 KB5015807
19043.1806 2022-06 Coptional preview (third week) 2022-06-28 KB5014666
19043.1767 2022-06 OOBout-of-band update 2022-06-20 KB5016139
19043.1766 2022-06 Bmonthly security update 2022-06-14 KB5014699
19043.1741 2022-05 Coptional preview (third week) 2022-06-02 KB5014023
19043.1708 2022-05 OOBout-of-band update 2022-05-19 KB5015020
19043.1706 2022-05 Bmonthly security update 2022-05-10 KB5013942
19043.1682 2022-04 Coptional preview (third week) 2022-04-25 KB5011831
19043.1645 2022-04 Bmonthly security update 2022-04-12 KB5012599
19043.1620 2022-03 Coptional preview (third week) 2022-03-22 KB5011543
19043.1586 2022-03 Bmonthly security update 2022-03-08 KB5011487
19043.1566 2022-02 Coptional preview (third week) 2022-02-15 KB5010415
19043.1526 2022-02 Bmonthly security update 2022-02-08 KB5010342
19043.1503 2022-01 Coptional preview (third week) 2022-01-25 KB5009596
19043.1469 2022-01 OOBout-of-band update 2022-01-17 KB5010793
19043.1466 2022-01 Bmonthly security update 2022-01-11 KB5009543
19043.1415 2021-12 Bmonthly security update 2021-12-14 KB5008212
19043.1387 2021-11 Coptional preview (third week) 2021-11-22 KB5007253
19043.1348 2021-11 Bmonthly security update 2021-11-09 KB5007186
19043.1320 2021-10 Coptional preview (third week) 2021-10-26 KB5006738
19043.1288 2021-10 Bmonthly security update 2021-10-12 KB5006670
19043.1266 2021-09 Coptional preview (third week) 2021-09-30 KB5005611
19043.1237 2021-09 Bmonthly security update 2021-09-14 KB5005565
19043.1202 2021-08 Coptional preview (third week) 2021-09-01 KB5005101
19043.1165 2021-08 Bmonthly security update 2021-08-10 KB5005033
19043.1151 2021-07 Coptional preview (third week) 2021-07-29 KB5004296
19043.1110 2021-07 Bmonthly security update 2021-07-13 KB5004237
19043.1083 2021-07 OOBout-of-band update 2021-07-06 KB5004945
19043.1082 2021-06 OOBout-of-band update 2021-06-29 KB5004760
19043.1081 2021-06 Coptional preview (third week) 2021-06-21 KB5003690
19043.1055 2021-06 OOBout-of-band update 2021-06-11 KB5004476
19043.1052 2021-06 Bmonthly security update 2021-06-08 KB5003637
19043.1023 2021-05 Coptional preview (third week) 2021-05-25 KB5003214
19043.985 2021-05 Bmonthly security update 2021-05-18 KB5003173