# Windows 10, version 21H2

The Windows 10 November 2021 Update (codenamed "21H2") 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.

## 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. The update began rolling out on November 16, 2021. Notable changes in the November 2021 Update include:
* 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. The Enterprise, Enterprise multi-session, IoT Enterprise and Education editions have reached end of service on June 11, 2024. The Enterprise LTSC and IoT Enterprise LTSC editions will reach end of service on January 12, 2027 and January 13, 2032, respectively.
| 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 | KB5004296 | Release Preview Channel: July 15, 2021 | |
| 10.0.19044.1149 | KB5004296 | Release Preview Channel: July 20, 2021 | |
| 10.0.19044.1151 | KB5004296 | Release Preview Channel: July 29, 2021 | |
| 10.0.19044.1165 | KB5005033 | Release Preview Channel: August 10, 2021 | |
| 10.0.19044.1200 | 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 | KB5005101 | Release Preview Channel: August 31, 2021 | |
| 10.0.19044.1237 | KB5005565 | Release Preview Channel: September 14, 2021 | |
| 10.0.19044.1263 | KB5005611 | Release Preview Channel: September 23, 2021 | |
| 10.0.19044.1266 | KB5005611 | 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 | KB5006670 | Release Preview Channel: October 12, 2021 Public release: November 16, 2021 | |
| 10.0.19044.1319 | KB5006738 | Release Preview Channel: October 19, 2021 | |
| 10.0.19044.1320 | KB5006738 | Release Preview Channel: October 26, 2021 | |
| 10.0.19044.1348 | KB5007186 | Release Preview Channel: November 9, 2021 Public release: November 16, 2021 | |
| 10.0.19044.1379 | KB5007253 | Release Preview Channel: November 16, 2021 | |
| 10.0.19044.1381 | KB5007253 | Release Preview Channel: November 18, 2021 | |
| 10.0.19044.1387 | KB5007253 | Release Preview Channel and public release: November 22, 2021 | |
| 10.0.19044.1415 | 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 | 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 | KB5010793 | Public release: January 17, 2022 | |
| 10.0.19044.1499 | 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 | KB5009596 | Release Preview Channel and public release: January 25, 2022 | |
| 10.0.19044.1526 | 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 | KB5010415 | Release Preview Channel and public release: February 15, 2022 | |
| 10.0.19044.1586 | 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 | 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 | KB5011543 | Release Preview Channel and public release: March 22, 2022 | |
| 10.0.19044.1645 | 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 | KB5011831 | Release Preview Channel: April 14, 2022 | |
| 10.0.19044.1682 | KB5011831 | Release Preview Channel and public release: April 25, 2022 | |
| 10.0.19044.1706 | 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 | KB5015020 | Public release: May 19, 2022 | |
| 10.0.19044.1737 | KB5014023 | Release Preview Channel: May 12, 2022 | |
| 10.0.19044.1739 | KB5014023 | Release Preview Channel: May 23, 2022 | |
| 10.0.19044.1741 | KB5014023 | Release Preview Channel and public release: June 2, 2022 | |
| 10.0.19044.1766 | 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 | 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 | KB5014666 | Release Preview Channel: June 23, 2022 Public release: June 28, 2022 | |
| 10.0.19044.1826 | 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 | KB5015878 | Release Preview Channel: July 18, 2022 | |
| 10.0.19044.1865 | KB5015878 | Release Preview Channel and public release: July 26, 2022 | |
| 10.0.19044.1889 | 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 | KB5016688 | Release Preview Channel: August 15, 2022 | |
| 10.0.19044.1949 | KB5016688 | Release Preview Channel and public release: August 26, 2022 | |
| 10.0.19044.2006 | 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 | KB5017380 | Release Preview Channel: September 15, 2022 Public release: September 20, 2022 |
| 10.0.19044.2130 | 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 | KB5020435 | Release Preview Channel and public release: October 17, 2022 | |
| 10.0.19044.2192 | KB5018482 | Release Preview Channel: October 18, 2022 | |
| 10.0.19044.2193 | KB5018482 | Release Preview Channel: October 24, 2022 Public release: October 25, 2022 |
| 10.0.19044.2194 | KB5020953 | Release Preview Channel and public release: October 28, 2022 | |
| 10.0.19044.2251 | 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 | KB5020030 | Release Preview Channel and public release: November 15, 2022 | |
| 10.0.19044.2364 | 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 | 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 | KB5019275 | Release Preview Channel: January 12, 2023 | |
| 10.0.19044.2546 | KB5022282 | Release Preview Channel and public release: January 19, 2023 | |
| 10.0.19044.2604 | 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 | KB5022906 | Release Preview Channel and public release: February 21, 2023 | |
| 10.0.19044.2728 | 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 | KB5023773 | Release Preview Channel and public release: March 21, 2023 | |
| 10.0.19044.2846 | KB5025221 | Release Preview Channel and public release: April 11, 2023 | |
| 10.0.19044.2965 | KB5026361 | Release Preview Channel and public release: May 9, 2023 | |
| 10.0.19044.3086 | KB5027215 | Release Preview Channel and public release: June 13, 2023 | |
| 10.0.19044.3208 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | KB5040427 | Public release: July 9, 2024 | This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only. |
| 10.0.19044.4780 | KB5041580 | Public release: August 13, 2024 | This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only. |
| 10.0.19044.4894 | KB5043064 | Public release: September 10, 2024 | This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only. |
| 10.0.19044.5011 | KB5044273 | Public release: October 8, 2024 | This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only. |
| 10.0.19044.5131 | KB5046613 | Public release: November 12, 2024 | This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only. |
| 10.0.19044.5247 | KB5048652 | Public release: December 10, 2024 | This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only. |
| 10.0.19044.5371 | KB5049981 | Public release: January 14, 2025 | This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only. |
| 10.0.19044.5487 | KB5051974 | Public release: February 11, 2025 | This update is available for Enterprise LTSC and IoT Enterprise LTSC editions only. |
| Version | Knowledge base | Release date(s) | Highlights |