TL;DR: Check this page before applying any Azure Local update. Feature releases are mandatory and require a matching DataON SBE package. If a release is marked Hold or Proceed with guidance, read the linked article first.
Last reviewed: October 12, 2026
Select a release number to see Microsoft’s list of what’s new in that release. Microsoft sometimes re-releases an update with a new build number to fix specific issues. Compare your cluster’s solution version to the Current build column, and check Earlier build? to see whether you need the newer one. Build numbers come from Microsoft’s Azure Local release information page.
| Release | Type | Current build | DataON status | Earlier build? | Guidance |
|---|---|---|---|---|---|
| 2610 | Feature (mandatory) SBE required | TBD | 8000 series Not yet available | — | DataON validates the SBE package separately for each platform series, so each series’ status changes on its own. Until your series is validated, the Azure portal shows this update as Pending OEM Validation. Do not apply until your series is updated here. |
| 7000 series Not yet available | |||||
| 6000 series Not yet available | |||||
| 2609 | Cumulative | 12.2609.1003.7 | Hold | — | Nodes have failed to boot after the update reboot. Run the check in Azure Local Node Fails to Boot After Update or Reboot (0xc000000d) before scheduling. |
| 2608 | Cumulative | 12.2608.1003.9 Supersedes .8 | No DataON-specific guidance | Apply the current build | On .8? Update to .9. • .9 fixed solution updates needing an extra Cluster-Aware Updating attempt and failing after running out of retries. See Microsoft’s fixed issues for 2608. |
| 2607 | Cumulative | 12.2607.1003.73 Supersedes .71, .69 | No DataON-specific guidance | Apply the current build | On .69 or .71? Update to .73. • .71 fixed Trusted Launch VMs not starting after the 2607 update. • .73 fixed SBE download failures and update retry errors. See Microsoft’s fixed issues for 2607. Recommended minimum for brownfield 23H2 → 24H2 upgrades (Application Control fix). |
| 2606 | Cumulative | 12.2606.1003.205 | No DataON-specific guidance | — | — |
| 2605 | Cumulative | 12.2605.1003.1003 Supersedes .210 | No DataON-specific guidance | — | — |
| 2604 | Feature (mandatory) SBE required | 12.2604.1003.1006 Supersedes .1005, .1002, .209 | Recommended | — | Current baseline. See SBE 2604 — Component Versions Reference, 2604: Legal Notice managed by security baseline, and 2601–2604: Potential unintended VM deletion — run the Remediation Support Tool. |
| 2603 | Cumulative Mandatory step before 2604 | 12.2603.1002.502 Supersedes .500, .15 | Superseded | — | Clusters must be on 2603 before they can update to 2604. If you are on an earlier release, update to 2603 first. |
| 2601–2602 | Cumulative | — | Superseded | — | Removed as update targets. See Azure Local 2601 and 2602 removed as update targets. |
How to read this table
DataON status
- Not yet available — not released yet, or DataON SBE validation is still in progress. For feature releases, the Azure portal shows the update as Pending OEM Validation. Do not apply.
- Monitoring — released, with no known issues so far, but limited field data. If you can wait, wait. If not, update a non-critical cluster first.
- Recommended — validated by DataON and proven in the field.
- Proceed with guidance — follow the linked article first.
- Hold — do not apply.
- No color — no DataON-specific guidance.
Platform series
When DataON validates a feature release’s SBE package separately for each platform series, the release shows a separate status for each series. Follow the status for your series only. Your series is the first digit of your model number: for example, an AZL-8224i is 8000 series.
Earlier build?
You already installed a release, and Microsoft has since published a newer build of it. Do you need the newer one?
- No action needed — stay where you are. The fix doesn’t affect DataON systems, or it arrives with your next monthly update.
- Apply the current build — install it now. It fixes an issue that matters for your cluster.
- See linked KB — it depends on your setup. Follow the article in the Guidance column.
Example
Your cluster is on 12.2604.1003.1002.
The 2604 row shows Current build .1006, with .1002 listed under “Supersedes.”
Check that row’s Earlier build? cell. No action needed: stay on .1002. Apply the current build: install .1006.
Going forward
- When a feature release is available, apply the matching DataON SBE package for your hardware family as part of the update.
- The Updates blade may show only one cumulative update. This is expected; see skip-level updates explained.
- For Microsoft’s full list of releases, build numbers, and supported update paths, see Azure Local release information.
- Questions about a specific release: open a DataON support ticket.