Azure Local release information

2025-06-02

Important

Azure Local, version 23H2 (releases 2311.2 to 2509) will reach end of support on October 31, 2025. After this date, you won't receive monthly security and quality updates. Support requests will only be available for patching to a supported release.

To enhance your Azure Local (formerly known as Azure Stack HCI) experience, we periodically release feature updates that introduce new capabilities and improvements. Additionally, Azure Local provides cumulative updates that include monthly quality and security enhancements. These updates are listed for each instance, ensuring your devices remain protected and productive.

This article provides the release information for Azure Local, including the release build and OS build information.

About Azure Local releases

The Azure Local includes multiple release trains: 2411, 2503, 2504, 2505, and so forth. Each release train after 2411 is either a feature build or cumulative update.

Feature build: The feature update build is the initial version of the software in a release train. Feature releases go beyond quality and security fixes, incorporating product enhancements, including updates for Azure Local services and agents.
Cumulative build: A cumulative update build includes the incremental updates from the most recent feature build.

The following diagram illustrates the feature builds, cumulative updates, and update paths.

Key considerations

Prior to the 2504 release, only one solution version was released monthly with OS build 25398.xxxx.

Starting with the 2504 release, Microsoft releases two solution versions each month, each aligned with a specific OS build. All future updates will continue using the OS build associated with their respective solution version. The following table provides the solution versions and their associated OS builds.

Solution version	OS build	Update path	Use case
10.24xx or 11.25xx	25398.xxxx	2411 --> 2411.2 --> 2411.3 --> 2503 --> 2504 --> 2505 --> so forth.	Use this version to update your system through each feature and cumulative build.
12.25xx	26100.xxxx	2504 --> 2505 --> so forth.	Use this version to install a specific build directly.

To keep your Azure Local solution in a supported state, you have up to six months to install updates, but we recommend installing updates as they're released.
Azure Arc resource bridge requires solution updates to be applied within one year. This is critical to keep certificates valid and the Azure Local VM functionality working.
Starting with Azure Local 2503, you can discover and import update packages for Azure Local with limited connectivity to Azure. For more information on how to import and discover update packages with limited connectivity, see Update via PowerShell with limited connectivity.

Feature release availability timing

Feature release availability dates depend on the model and SKU of the servers in your cluster.

If your cluster supports Solution Builder Extension software updates, you'll receive feature release updates (for example, 2504 or 2510). These updates are available after your hardware vendor completes their validation and confirms the release is ready. This process typically takes a few weeks following the Microsoft release and varies by hardware vendor.

Note

The validation process ensures a reliable update experience for your cluster. It minimizes potential issues and reduces the overall number of updates you need to manage for Azure Local.