Windows 10, version 21H2

The Windows 10 November 2021 Update^[1] (codenamed "21H2"^[2]) is the twelfth major update to Windows 10 as the cumulative update to the May 2021 Update. It carries the build number 10.0.19044.

Windows 10, version 21H2
Predecessor Windows 10, version 21H1 Successor Windows 10, version 22H2

Version history

The first preview was released on July 15, 2021, to Insiders who opted in to Release Preview Channel that failed to meet minimum system requirements for Windows 11.^[3][4] The update began rolling out on November 16, 2021. Notable changes in the November 2021 Update include:^[2][5]

• GPU compute support in the Windows Subsystem for Linux (WSL) and Azure IoT Edge for Linux on Windows (EFLOW) deployments
• New simplified passwordless deployment models for Windows Hello for Business
• Support for WPA3 Hash-to-Element (H2E) standards
• Support for DirectStorage
• Support for NVMe 2.0
• Limited support for Alder Lake Thread Director
• New highlights feature for Search on the taskbar

The update has reached end of service on June 13, 2023 for Home, Pro, Pro Education and Pro for Workstations editions.^[6] The Enterprise, Enterprise multi-session, IoT Enterprise and Education editions have reached end of service on June 11, 2024.^[7] The Enterprise LTSC and IoT Enterprise LTSC editions will reach end of service on January 12, 2027 and January 13, 2032, respectively.^[8]

Legend:	Old version, not maintained	Older version, still maintained

Preview builds of Windows 10, version 21H2
Version	Knowledge base	Release date(s)	Highlights
10.0.19044.1147 [3]	KB5004296	Release Preview Channel: July 15, 2021
10.0.19044.1149 [9]		Release Preview Channel: July 20, 2021
10.0.19044.1151 [10]		Release Preview Channel: July 29, 2021
10.0.19044.1165 [11]	KB5005033	Release Preview Channel: August 10, 2021
10.0.19044.1200 [12]	KB5005101	Release Preview Channel: August 18, 2021	Added support for WPA3 Hash-to-Element (H2E) standards New simplified passwordless deployment models for Windows Hello for Business Added GPU compute support in the Windows Subsystem for Linux (WSL) and Azure IoT Edge for Linux on Windows (EFLOW) deployments
10.0.19044.1202 [13]		Release Preview Channel: August 31, 2021
10.0.19044.1237 [14]	KB5005565	Release Preview Channel: September 14, 2021
10.0.19044.1263 [15]	KB5005611	Release Preview Channel: September 23, 2021
10.0.19044.1266 [16]		Release Preview Channel: September 30, 2021
Version	Knowledge base	Release date(s)	Highlights

Public patches of Windows 10, version 21H2
Version	Knowledge base	Release date(s)	Highlights
10.0.19044.1288 Version 21H2 [17]	KB5006670	Release Preview Channel: October 12, 2021 Public release: November 16, 2021
10.0.19044.1319 [18]	KB5006738	Release Preview Channel: October 19, 2021
10.0.19044.1320 [19]		Release Preview Channel: October 26, 2021
10.0.19044.1348 [20]	KB5007186	Release Preview Channel: November 9, 2021 Public release: November 16, 2021
10.0.19044.1379 [21]	KB5007253	Release Preview Channel: November 16, 2021
10.0.19044.1381 [22]		Release Preview Channel: November 18, 2021
10.0.19044.1387 [23]		Release Preview Channel and public release: November 22, 2021
10.0.19044.1415 [24]	KB5008212	Release Preview Channel and public release: December 14, 2021	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1466 [25]	KB5009543	Release Preview Channel and public release: January 11, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1469 [26]	KB5010793	Public release: January 17, 2022
10.0.19044.1499 [27]	KB5009596	Release Preview Channel: January 14, 2022	Added a reminder related to the retirement of Internet Explorer 11 in June 2022 New "Sync Your Settings" feature for migrating settings to the original release of Windows 11 Added support to directly access to select Microsoft Edge profiles from News & Interests
10.0.19044.1503 [28]		Release Preview Channel and public release: January 25, 2022
10.0.19044.1526 [29]	KB5010342	Release Preview Channel and public release: February 8, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1566 [30]	KB5010415	Release Preview Channel and public release: February 15, 2022
10.0.19044.1586 [31]	KB5011487	Release Preview Channel and public release: March 8, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1618 [32]	KB5011543	Release Preview Channel: March 14, 2022	New highlights feature for Search on the taskbar Added the ability to change the color of toast buttons New policy for expanding an app's top three notifications by default in the Action Center
10.0.19044.1620 [33]		Release Preview Channel and public release: March 22, 2022
10.0.19044.1645 [34]	KB5012599	Release Preview Channel and public release: April 12, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1679 [35]	KB5011831	Release Preview Channel: April 14, 2022
10.0.19044.1682 [36]		Release Preview Channel and public release: April 25, 2022
10.0.19044.1706 [37]	KB5013942	Release Preview Channel and public release: May 10, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1708 [38]	KB5015020	Public release: May 19, 2022
10.0.19044.1737 [39]	KB5014023	Release Preview Channel: May 12, 2022
10.0.19044.1739 [40]		Release Preview Channel: May 23, 2022
10.0.19044.1741 [41][42]		Release Preview Channel and public release: June 2, 2022
10.0.19044.1766 [43]	KB5014699	Release Preview Channel and public release: June 14, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1767 [44]	KB5016139	Release Preview Channel and public release: June 20, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1806 [45][46]	KB5014666	Release Preview Channel: June 23, 2022 Public release: June 28, 2022
10.0.19044.1826 [47]	KB5015807	Release Preview Channel and public release: July 12, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1862 [48]	KB5015878	Release Preview Channel: July 18, 2022
10.0.19044.1865 [49]		Release Preview Channel and public release: July 26, 2022
10.0.19044.1889 [50]	KB5016616	Release Preview Channel and public release: August 9, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.1947 [51]	KB5016688	Release Preview Channel: August 15, 2022
10.0.19044.1949 [52]		Release Preview Channel and public release: August 26, 2022
10.0.19044.2006 [53]	KB5017308	Release Preview Channel and public release: September 13, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.2075 [54][55]	KB5017380	Release Preview Channel: September 15, 2022 Public release: September 20, 2022
10.0.19044.2130 [56]	KB5018410	Release Preview Channel and public release: October 11, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.2132 [57]	KB5020435	Release Preview Channel and public release: October 17, 2022
10.0.19044.2192 [58]	KB5018482	Release Preview Channel: October 18, 2022
10.0.19044.2193 [59][60]		Release Preview Channel: October 24, 2022 Public release: October 25, 2022
10.0.19044.2194 [61]	KB5020953	Release Preview Channel and public release: October 28, 2022
10.0.19044.2251 [62]	KB5019959	Release Preview Channel and public release: November 8, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.2311 [63]	KB5020030	Release Preview Channel and public release: November 15, 2022
10.0.19044.2364 [64]	KB5021233	Release Preview Channel and public release: December 13, 2022	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.2486 [65]	KB5022282	Release Preview Channel and public release: January 10, 2023	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.2545 [66]	KB5019275	Release Preview Channel: January 12, 2023
10.0.19044.2546 [67]	KB5022282	Release Preview Channel and public release: January 19, 2023
10.0.19044.2604 [68]	KB5022834	Release Preview Channel and public release: February 14, 2023	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.2673 [69]	KB5022906	Release Preview Channel and public release: February 21, 2023
10.0.19044.2728 [70]	KB5023696	Release Preview Channel and public release: March 14, 2023	This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.
10.0.19044.2788 [71]	KB5023773	Release Preview Channel and public release: March 21, 2023
10.0.19044.2846 [72]	KB5025221	Release Preview Channel and public release: April 11, 2023
10.0.19044.2965 [73]	KB5026361	Release Preview Channel and public release: May 9, 2023
10.0.19044.3086 [74]	KB5027215	Release Preview Channel and public release: June 13, 2023
10.0.19044.3208 [75]	KB5028166	Public release: July 11, 2023	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.3324 [76]	KB5029244	Public release: August 8, 2023	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.3448 [77]	KB5030211	Public release: September 12, 2023	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.3570 [78]	KB5031356	Public release: October 10, 2023	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.3693 [79]	KB5032189	Public release: November 14, 2023	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.3803 [80]	KB5033372	Public release: December 12, 2023	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.3930 [81]	KB5034122	Public release: January 9, 2024	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.4046 [82]	KB5034763	Public release: February 13, 2024	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.4170 [83]	KB5035845	Public release: March 12, 2024	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.4291 [84]	KB5036892	Public release: April 9, 2024	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.4412 [85]	KB5037768	Public release: May 14, 2024	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.4529 [86]	KB5039211	Public release: June 11, 2024	This update is available for Education, Enterprise, Enterprise multi-session, IoT Enterprise, Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.4651 [87]	KB5040427	Public release: July 9, 2024	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.4780 [88]	KB5041580	Public release: August 13, 2024	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.4894 [89]	KB5043064	Public release: September 10, 2024	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.5011 [90]	KB5044273	Public release: October 8, 2024	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.5131 [91]	KB5046613	Public release: November 12, 2024	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.5247 [92]	KB5048652	Public release: December 10, 2024	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.5371 [93]	KB5049981	Public release: January 14, 2025	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.5487 [94]	KB5051974	Public release: February 11, 2025	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.5608 [95]	KB5053606	Public release: March 11, 2025	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
10.0.19044.5737 [96]	KB5055518	Public release: April 8, 2025	This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only.
Version	Knowledge base	Release date(s)	Highlights

See also

• Windows 10 version history