Azure Stack HCI release information

Applies to: Azure Stack HCI, versions 21H2 and 20H2

Feature updates for Azure Stack HCI are released periodically to enhance the customer experience. To keep your Azure Stack HCI service in a supported state, you have up to six months to install updates, but we recommend installing updates as they are released. Microsoft provides monthly quality and security updates for each supported version of Azure Stack HCI and also provides yearly feature updates.

This article provides a list of the available updates for each version of Azure Stack HCI.

Azure Stack HCI release summary

The following table provides the release summary of each version of Azure Stack HCI and the date by when you must apply updates to keep your Azure Stack HCI service in a supported state.

All dates are listed in ISO 8601 format: YYYY-MM-DD

Version Availability date OS build Apply update by
21H2 2021-10-19 20348.288 2022-04-19
20H2 2020-12-10 17784.1408 Initial release

Azure Stack HCI, version 21H2 (OS build 20348)

The following are the available updates for Azure Stack HCI, version 21H2.

All dates are listed in ISO 8601 format: YYYY-MM-DD

OS build Availability date KB article
20348.859 2022-07-19 KB 5015879
20348.825 2022-07-12 KB 5015827
20348.803 2022-06-23 KB 5014665
20348.768 2022-06-14 KB 5014678
20348.740 2022-05-24 KB 5014021
20348.707 2022-05-10 KB 5013944
20348.681 2022-04-25 KB 5012637
20348.643 2022-04-12 KB 5012604
20348.617 2022-03-22 KB 5011558
20348.587 2022-03-08 KB 5011497
20348.558 2022-02-15 KB 5010421
20348.524 2022-02-08 KB 5010354
20348.502 2022-01-25 KB 5009608
20348.473 2022-01-17 KB 5010796
20348.469 2022-01-11 KB 5009555
20348.407 2022-01-05 KB 5010197
20348.405 2021-12-14 KB 5008223
20348.380 2021-11-22 KB 5007254
20348.350 2021-11-09 KB 5007205
20348.320 2021-10-26 KB 5006745

Azure Stack HCI, version 20H2 (OS build 17784)

The following are the available updates for Azure Stack HCI, version 20H2.

All dates are listed in ISO 8601 format: YYYY-MM-DD

OS build Availability date KB article
17784.2576 2022-07-21 KB 5015881
17784.2576 2022-07-21 KB 5015899
17784.2545 2022-07-12 KB 5015809
17784.2540 2022-07-12 KB 5015894
17784.2524 2022-06-23 KB 5014667
17784.2515 2022-06-23 KB 5014798
17784.2486 2022-06-14 KB 5014698
17784.2462 2022-05-24 KB 5014020
17784.2430 2022-05-10 KB 5013951
17784.2424 2022-05-10 KB 5014033
17784.2398 2022-04-21 KB 5012660
17784.2398 2022-04-21 KB 5012676
17784.2364 2022-04-12 KB 5012589
17784.2337 2022-03-22 KB 5011566
17784.2331 2022-03-22 KB 5011575
17784.2306 2022-03-08 KB 5011490
17784.2279 2022-02-15 KB 5010428
17784.2245 2022-02-08 KB 5010343
17784.2244 2022-02-08 KB 5011353
17784.2219 2022-01-27 KB 5009625
17784.2219 2022-01-27 KB 5009640
17784.2190 2022-01-11 KB 5009542
17784.2135 2021-12-14 KB 5008210
17784.2100 2021-11-22 KB 5007264
17784.2067 2021-11-09 KB 5007187
17784.2060 2021-11-09 KB 5007349
17784.2038 2021-10-19 KB 5006741
17784.2036 2021-10-19 KB 5006751
17784.2005 2021-10-12 KB 5006679
17784.1979 2021-09-21 KB 5005620
17784.1950 2021-09-14 KB 5005567
17784.1941 2021-09-14 KB 5005942
17784.1915 2021-08-26 KB 5005105
17784.1884 2021-08-10 KB 5005042
17784.1881 2021-08-10 KB 5005410
17784.1861 2021-07-20 KB 5004311
17784.1861 2021-07-20 KB 5004425
17784.1827 2021-07-13 KB 5004235
17784.1797 2021-06-15 KB 5003704
17784.1768 2021-06-08 KB 5003643
17784.1762 2021-06-08 KB 5004179
17784.1737 2021-05-20 KB 5003237
17784.1705 2021-05-11 KB 5003188
17784.1700 2021-05-11 KB 5003282
17784.1681 2021-04-22 KB 5001395
17784.1645 2021-04-13 KB 5001343
17784.1640 2021-04-13 KB 5001449
17784.1619 2021-03-25 KB 5000849
17784.1589 2021-03-09 KB 5000801
17784.1580 2021-03-09 KB 5001158
17784.1557 2021-02-16 KB 4601381
17784.1526 2021-02-09 KB 4601317
17784.1497 2021-01-21 KB 4598294
17784.1466 2021-01-12 KB 4598232
17784.1408 2020-12-10 KB 4592441

Release notes

For information about what's included in each version of Azure Stack HCI, see the release notes:

Next steps

Azure Stack HCI Lifecycle