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Azure Arc Blog
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Upgrade Azure Local operating system to new version

mindydiep's avatar
mindydiep
Icon for Microsoft rankMicrosoft
Jun 13, 2025
Today, we’re sharing more details about the end of support for Azure Local, with OS version 25398.xxxx (23H2) on October 31, 2025. After this date, monthly security and quality updates stop, and Micr...
Updated Jul 07, 2025
Version 4.0
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awfma's avatar
awfma
Copper Contributor
Aug 01, 2025

Hi,

I have a client who was running 22H2 stretched cluster but recently upgraded to 23H2 25398.2505.  I understand this use case falls under Scenario #1 in your article above.

Although the current environment is running 25398.2505, the previous stretched cluster configurations inherited from 22H2 is still in place.  Will this be an issue when the environment is automatically upgraded to OS version 26100.xxxx via a solution update to 2509?  Will the environment remains in a supported state after automatic upgrade to OS version 26100.xxxx?

Thanks,

Adrian

philcruicks's avatar
philcruicks
Copper Contributor
Aug 27, 2025

mindydiep​ I also have the same question...for both this and the direct 22H2 to 24H2 upgrade, is an existing stretch still supported on both scenarios?