[Windows Version一覧] / [Windows Update一覧]

Windows 10 Version 21H2

詳細情報

バージョン	Windows 10 Version 21H2
リリース日	2021/11/16
ビルド番号	19044
URL(英語)	https://support.microsoft.com/en-us/help/5008339
URL(日本語)	https://support.microsoft.com/ja-jp/help/5008339
既知の不具合更新日(英語)
既知の不具合のURL(英語)	https://learn.microsoft.com/en-us/windows/release-health/status-windows-10-21h2
既知の不具合更新日(日本語)
既知の不具合のURL(日本語)	https://learn.microsoft.com/ja-jp/windows/release-health/status-windows-10-21h2

新機能(英語)

What's new for Windows 10, version 21H2, Windows 10, version 21H1, Windows 10, version 20H2, and Windows 10, version 2004 release notes

Windows 10, versions 21H2, 21H1, 20H2, and 2004 share a common core operating system and an identical set of system files. As a result, the release notes for Windows 10, versions 21H2, 21H1, 20H2, and 2004 will share an update history page. Each release page will contain a list of addressed issues for 21H2, 21H1, 20H2, and 2004 versions. Note that the 21H2, 21H1 and 20H2 versions will always contain the fixes for 2004; however, 2004 will not contain the fixes for 21H2, 21H1 and 20H2. The update history page will provide you with the build numbers for 21H2, 21H1, 20H2, and 2004 versions so that it will be easier for support to assist you if you encounter issues.

既知の不具合(英語)

このバージョンは対象外です。上記URLで確認してください。

新機能(日本語)

Windows 10、バージョン 21H2、Windows 10、バージョン 21H1、Windows 10、バージョン 20H2、Windows 10 の新機能、バージョン 2004 リリースノート

Windows 10バージョン 21H2、21H1、20H2、2004 は、共通のコアオペレーティングシステムと同一のシステムファイルセットを共有します。その結果、Windows 10、バージョン 21H2、21H1、20H2、2004 のリリースノートでは、更新履歴ページが共有されます。各リリースページには、21H2、21H1、20H2、および 2004 バージョンの対処された問題の一覧が表示されます。 21H2、21H1、20H2 のバージョンには、常に 2004 の修正プログラムが含まれる点に注意してください。ただし、2004 には、21H2、21H1、および 20H2 の修正プログラムは含め"な"。更新履歴ページには、21H2、21H1、20H2、2004 バージョンのビルド番号が表示され、問題が発生した場合にサポートが容易になります。

既知の不具合(日本語)

このバージョンは対象外です。上記URLで確認してください。

更新プログラム一覧

KB番号タイプ	リリース日更新日	バージョン	ビルド番号
KB5053606	2025/03/11	Windows 10 22H2 Windows 10 21H2	19045.5608 19044.5608
KB5051974	2025/02/11	Windows 10 22H2 Windows 10 21H2	19045.5487 19044.5487
KB5049981	2025/01/14	Windows 10 22H2 Windows 10 21H2	19045.5371 19044.5371
KB5048652	2024/12/10	Windows 10 22H2 Windows 10 21H2	19045.5247 19044.5247
KB5046613	2024/11/12	Windows 10 22H2 Windows 10 21H2	19045.5131 19044.5131
KB5044273	2024/10/08	Windows 10 22H2 Windows 10 21H2	19045.5011 19044.5011
KB5043064	2024/09/10	Windows 10 22H2 Windows 10 21H2	19045.4894 19044.4894
KB5041580	2024/08/13	Windows 10 22H2 Windows 10 21H2	19045.4780 19044.4780
KB5040427	2024/07/09	Windows 10 22H2 Windows 10 21H2	19045.4651 19044.4651
KB5039211	2024/06/11	Windows 10 22H2 Windows 10 21H2	19045.4529 19044.4529
KB5037768	2024/05/14	Windows 10 22H2 Windows 10 21H2	19045.4412 19044.4412
KB5036892	2024/04/09	Windows 10 22H2 Windows 10 21H2	19045.4291 19044.4291
KB5035845	2024/03/12	Windows 10 22H2 Windows 10 21H2	19045.4170 19044.4170
KB5034763	2024/02/13	Windows 10 22H2 Windows 10 21H2	19045.4046 19044.4046
KB5034122	2024/01/09	Windows 10 22H2 Windows 10 21H2	19045.3930 19044.3930
KB5033372	2023/12/12	Windows 10 22H2 Windows 10 21H2	19045.3803 19044.3803
KB5032189	2023/11/14	Windows 10 22H2 Windows 10 21H2	19045.3693 19044.3693
KB5031356	2023/10/10	Windows 10 22H2 Windows 10 21H2	19045.3570 19044.3570
KB5030211	2023/09/12	Windows 10 22H2 Windows 10 21H2	19045.3448 19044.3448
KB5029244	2023/08/08	Windows 10 22H2 Windows 10 21H2	19045.3324 19044.3324
KB5028166	2023/07/11	Windows 10 22H2 Windows 10 21H2	19045.3208 19044.3208
KB5027215	2023/06/13	Windows 10 22H2 Windows 10 21H2	19045.3086 19044.3086
KB5026361	2023/05/09	Windows 10 22H2 Windows 10 21H2 Windows 10 20H2	19045.2965 19044.2965 19042.2965
KB5025221	2023/04/11	Windows 10 22H2 Windows 10 21H2 Windows 10 20H2	19045.2846 19044.2846 19042.2846
KB5023773 Preview	2023/03/21	Windows 10 22H2 Windows 10 21H2 Windows 10 20H2	19045.2788 19044.2788 19042.2788
KB5023696	2023/03/14	Windows 10 22H2 Windows 10 21H2 Windows 10 20H2	19045.2728 19044.2728 19042.2728
KB5022906 Preview	2023/02/21	Windows 10 22H2 Windows 10 21H2 Windows 10 20H2	19045.2673 19044.2673 19042.2673
KB5022834	2023/02/14	Windows 10 22H2 Windows 10 21H2 Windows 10 20H2	19045.2604 19044.2604 19042.2604
KB5019275 Preview	2023/01/19	Windows 10 22H2 Windows 10 21H2 Windows 10 20H2	19045.2546 19044.2546 19042.2546
KB5022282	2023/01/10	Windows 10 22H2 Windows 10 21H2 Windows 10 20H2	19045.2486 19044.2486 19042.2486
KB5021233	2022/12/13	Windows 10 22H2 Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19045.2364 19044.2364 19043.2364 19042.2364
KB5020030 Preview	2022/11/15	Windows 10 22H2 Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19045.2311 19044.2311 19043.2311 19042.2311
KB5019959	2022/11/08	Windows 10 22H2 Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19045.2251 19044.2251 19043.2251 19042.2251
KB5020953 Out-of-band	2022/10/28	Windows 10 22H2 Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19045.2194 19044.2194 19043.2194 19042.2194
KB5018482 Preview	2022/10/25	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.2193 19043.2193 19042.2193
KB5020435 Out-of-band	2022/10/17	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.2132 19043.2132 19042.2132
KB5018410	2022/10/11	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.2130 19043.2130 19042.2130
KB5017380 Preview	2022/09/20	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.2075 19043.2075 19042.2075
KB5017308	2022/09/13	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.2006 19043.2006 19042.2006
KB5016688 Preview	2022/08/26	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1949 19043.1949 19042.1949
KB5016616	2022/08/09	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1889 19043.1889 19042.1889
KB5015878 Preview	2022/07/26	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1865 19043.1865 19042.1865
KB5015807	2022/07/12	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1826 19043.1826 19042.1826
KB5014666 Preview	2022/06/28	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1806 19043.1806 19042.1806
KB5016139 Out-of-band	2022/06/20	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1767 19043.1767 19042.1767
KB5014699	2022/06/14	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1766 19043.1766 19042.1766
KB5014023 Preview	2022/06/02	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1741 19043.1741 19042.1741
KB5015020 Out-of-band	2022/05/19	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1708 19043.1708 19042.1708
KB5013942	2022/05/10	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1706 19043.1706 19042.1706
KB5011831 Preview	2022/04/25	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1682 19043.1682 19042.1682
KB5012599	2022/04/12	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1645 19043.1645 19042.1645
KB5011543 Preview	2022/03/22	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1620 19043.1620 19042.1620
KB5011487	2022/03/08	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1586 19043.1586 19042.1586
KB5010415 Preview	2022/02/15	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1566 19043.1566 19042.1566
KB5010342	2022/02/08	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1526 19043.1526 19042.1526
KB5009596 Preview	2022/01/25	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1503 19043.1503 19042.1503
KB5010793 Out-of-band	2022/01/17	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1469 19043.1469 19042.1469
KB5009543	2022/01/11	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2	19044.1466 19043.1466 19042.1466
KB5008212	2021/12/14	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2 Windows 10 2004	19044.1415 19043.1415 19042.1415 19041.1415
KB5007253 Preview	2021/11/22	Windows 10 21H2 Windows 10 21H1 Windows 10 20H2 Windows 10 2004	19044.1387 19043.1387 19042.1387 19041.1387

Windows 10 Version 21H2

詳細情報

新機能(英語)

既知の不具合(英語)

新機能(日本語)

既知の不具合(日本語)

更新プログラム一覧

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