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| 1 | +--- |
| 2 | +title: Azure Stack Hub hotfix 1.2408.1.46 |
| 3 | +description: Summary of Azure Stack Hub hotfix 1.2408.1.46 |
| 4 | +author: sethmanheim |
| 5 | +ms.topic: article |
| 6 | +ms.date: 06/03/2025 |
| 7 | +ms.author: sethm |
| 8 | + |
| 9 | +--- |
| 10 | + |
| 11 | +# Azure Stack Hub hotfix 1.2408.1.46 |
| 12 | + |
| 13 | +## Summary |
| 14 | + |
| 15 | +- Fixed an issue with scale units that led to health service errors. |
| 16 | +- Add nested virtualization support for ESv3 and DSv3 series VM sizes. |
| 17 | +- Restart health agent when it's in a stopped state. |
| 18 | +- Fixed an issue related to AD FS operations. |
| 19 | + |
| 20 | +## Fixes rolled up from previous hotfix releases |
| 21 | + |
| 22 | +- Fixed an issue in which NRP did not properly release an IP address on VMSS scale-in. |
| 23 | +- CVEs for 12B: updated only connected nodes, similar to previous hotfix. |
| 24 | +- Fixed an issue in which certain Windows fixes were not correctly enabled on hosts. |
| 25 | +- Various security and Windows fixes. |
| 26 | +- Fixed an issue with the deployment of large GPU VMs (either **Standard_NC48ads_A100_v4** or **Standard_NC48ads_L40S_v4**), in which the configured **HighMemoryMappedIoGapSize** exceeds the maximum 256 GB allowed by Hyper-V. |
| 27 | +- Fixed an issue in which the time to update the host node was significantly extended. |
| 28 | + |
| 29 | +## Hotfix information |
| 30 | + |
| 31 | +To apply this hotfix, you must have version **1.2408.0.19** or later. |
| 32 | + |
| 33 | +> [!IMPORTANT] |
| 34 | +> As outlined in the release notes for the [2408 update](release-notes.md?view=azs-2408&preserve-view=true), make sure that you refer to the update activity checklist on running **Test-AzureStack** (with specified parameters), and resolve any operational issues that are found, including all warnings and failures. Also, review active alerts and resolve any that require action. |
| 35 | +
|
| 36 | +## File information |
| 37 | + |
| 38 | +Download the following files. Then, follow the instructions in [Apply updates in Azure Stack](azure-stack-apply-updates.md) to apply this update. |
| 39 | + |
| 40 | +[Download the zip file now](https://azurestackhub.download.prss.microsoft.com/dbazure/download/MAS_ProdHotfix_1.2408.1.46/HotFix/AzS_Update_1.2408.1.46.zip). |
| 41 | + |
| 42 | +[Download the hotfix xml file now](https://azurestackhub.download.prss.microsoft.com/dbazure/download/MAS_ProdHotfix_1.2408.1.46/HotFix/metadata.xml). |
| 43 | + |
| 44 | +## More information |
| 45 | + |
| 46 | +[Azure Stack Hub update resources](azure-stack-updates.md) |
| 47 | + |
| 48 | +[Apply updates in Azure Stack](azure-stack-apply-updates.md) |
| 49 | + |
| 50 | +[Monitor updates in Azure Stack by using the privileged endpoint](azure-stack-monitor-update.md) |
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