Archived release notes for Azure Stack HCI, version 20H2 Public Preview

Applies to: Azure Stack HCI, version 20H2

This article describes the contents of update packages for Azure Stack HCI, version 20H2 Public Preview releases prior to the General Availability (GA) release on December 10, 2020. You can also view the current Release notes for Azure Stack HCI.

December 8, 2020 Security Update (KB4592441)

This update includes improvements and fixes for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This update contains miscellaneous security improvements to internal OS functionality. It addresses a security vulnerability by preventing applications that run as a SYSTEM account from printing to "FILE:" ports. To address this issue in the future, make sure your applications or services run as a specific user or service account.

No additional issues were documented for this release.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

How to get this update

The December 8, 2020 security update (KB4592441) for Azure Stack HCI preview is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

File information

For a list of the files that are provided in this update (OS Build 17784.1408), download the file information for cumulative update 4592441.

Note

Some files erroneously have "Not applicable" in the "File version" column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.

November 23, 2020 Preview Update (KB4586852)

This update includes improvements and fixes for the Public Preview release of Azure Stack HCI.

Important

If you have Azure Stack HCI clusters configured and registered using the Public Preview image, then you must repair your Azure registration after the KB4586852 update is installed in order to use the new features that the update offers. After installing the update, follow these steps for each cluster:

  1. Make sure that all servers in the cluster have been updated to KB4586852. If they have not, then the repair will fail and indicate the node(s) that need to be updated.

  2. Connect to one of the cluster nodes either locally or using Enter-PSSession <server-name>

  3. Download the AzStackHCI v0.4.1 (or later) registration module from PowerShell Gallery. Run Install-Module -Name Az.StackHCI to get the latest module.

  4. Run the following command to repair your registration. Use the subscription ID that was used to register the cluster originally. Get-AzureStackHCI shows the current Azure Resource Manager Uri, which has the subscription information.

Register-AzStackHCI -SubscriptionId "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" -RepairRegistration

Improvements and fixes

This non-security update includes quality improvements. Key changes include:

  • With this update, Azure Stack HCI customers who hold valid Windows Server 2019 Datacenter edition license(s) can use them to conveniently activate virtual machines (VMs) hosted on Azure Stack HCI without having to manage product keys for each individual VM. Specifically, you can use Windows Admin Center or PowerShell to input an unused Windows Server 2019 Datacenter edition activation key directly into the Azure Stack HCI host to enable Automatic VM Activation (AVMA). VMs running Windows Server 2019 or earlier can then inherit activation from the host. The inputted key can be a Multiple Activation Key (MAK) obtained from the volume licensing center, the key printed on the Certificate of Authenticity (COA) sticker applied to an OEM server, or the key from a retail boxed copy of Windows Server 2019 Datacenter edition. In this release, Generic Volume License Keys (GVLK) are not supported.

  • Azure Stack HCI now collects required diagnostic data, which is the minimum data required to keep the device secure, up to date, and performing as expected. Required diagnostic data gathers a limited set of data that’s critical for understanding the device and its configuration. This data helps to identify problems that can occur on a specific hardware or software configuration.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

How to get this update

The November 23, 2020 security update (KB4586852) for Azure Stack HCI preview is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

File information

For a list of the files that are provided in this update (OS Build 17784.1381), download the file information for cumulative update 4586852.

Note

Some files erroneously have "Not applicable" in the "File version" column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.

November 10, 2020 Security Update (KB4586811)

This update includes improvements and fixes for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This update contains miscellaneous security improvements to internal OS functionality. It addresses a security vulnerability by preventing applications that run as a SYSTEM account from printing to local ports that point to a file. Failing print jobs log error 50, “The request is not supported” in event ID 372 in the PrintService\Admin event log. To address this issue in the future, make sure your applications or services run as a specific user or service account.

No additional issues were documented for this release.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

How to get this update

The November 10, 2020 security update (KB4586811) for Azure Stack HCI is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

File information

For a list of the files that are provided in this update (OS Build 17784.1345), download the file information for cumulative update 4586811.

Note

Some files erroneously have "Not applicable" in the "File version" column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.

November 10, 2020 Servicing Stack Update (KB4590242)

This update includes quality improvements for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This update makes quality improvements to the servicing stack, which is the component that installs updates. Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

How to get this update

The November, 2020 servicing stack update (KB4590242) for Azure Stack HCI is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

Restart information

You don't have to restart your computer after you apply this update.

Removal information

Servicing stack updates (SSUs) make changes to how updates are installed and cannot be uninstalled from the device.

File information

For a list of the files that are provided in this update (OS Build 17784.1342), download the file information for cumulative update 4590242.

References

For information on SSUs, see the following articles:

Learn about the terminology that Microsoft uses to describe software updates.

October 20, 2020 Preview Update (KB4580388)

This update includes improvements and fixes for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This nonsecurity update includes quality improvements. Key changes include:

  • With this update, Azure Stack HCI customers who hold valid Windows Server 2019 Datacenter edition license(s) can use them to conveniently activate virtual machines (VMs) hosted on Azure Stack HCI without having to manage product keys for each VM.

Known issues in this update

Microsoft is aware of one issue with this update.

Symptom

When using Live Migration to move a VM between Windows Server and Azure Stack HCI operating systems, you may see the error: "Blocked a migration operation for virtual machine because VM migration between differing Windows editions is not supported (virtual machine ID)."

Alternatively, this may also cause a Cluster Aware Updating (CAU) operation to fail if any of the VMs are expected to perform Live Migration during CAU.

Workaround

Use Quick Migration instead of Live Migration. If using CAU, change the default behavior temporarily so that CAU uses Quick Migration.

Example:

Get-ClusterResourceType "Virtual Machine" | Set-ClusterParameter MoveTypeThreshold 3001

It's recommended that you revert back to the previous MoveTypeThreshold value after CAU completes successfully.

For more information, see Configuring How VMs Are Moved when a Node is Drained.

How to get this update

The October 20, 2020 security update (KB4580388) for Azure Stack HCI is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

File information

For a list of the files that are provided in this update (OS Build 17784.1321), download the file information for cumulative update 4580388.

Note

Some files erroneously have "Not applicable" in the "File version" column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.

October 13, 2020 Security Update (KB4580363)

This update includes improvements and fixes for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

How to get this update

The October 13, 2020 security update (KB4580363) for Azure Stack HCI is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

File information

For a list of the files that are provided in this update (OS Build 17784.1288), download the file information for cumulative update 4580363.

Note

Some files erroneously have "Not applicable" in the "File version" column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.

October 13, 2020 Servicing Stack Update (KB4583287)

This update includes quality improvements for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This update makes quality improvements to the servicing stack, which is the component that installs updates. Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

How to get this update

The October 13, 2020 servicing stack update (KB4583287) for Azure Stack HCI is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

Restart information

You don't have to restart your computer after you apply this update.

Removal information

Servicing stack updates (SSUs) make changes to how updates are installed and cannot be uninstalled from the device.

File information

For a list of the files that are provided in this update (OS Build 17784.1287), download the file information for cumulative update 4583287.

References

For information on SSUs, see the following articles:

Learn about the terminology that Microsoft uses to describe software updates.

September 17, 2020 Preview Update (KB4577629)

This update includes improvements and fixes for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This nonsecurity update includes quality improvements. Key changes include:

  • Addressed an issue where Software Load Balancer (SLB) traffic going through the Multiplexer might be redirected to a different host that can cause an application connection failure.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

How to get this update

The September 17, 2020 security update (KB4577629) for Azure Stack HCI is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

File information

For a list of the files that are provided in this update (OS Build 17784.1259), download the file information for cumulative update 4577629

Note

Some files erroneously have "Not applicable" in the "File version" column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.

September 8, 2020 Security Update (KB4577470)

This update includes improvements and fixes for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

How to get this update

The September 8, 2020 security update (KB4577470) for Azure Stack HCI is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

File information

For a list of the files that are provided in this update (OS Build 17784.1226), download the file information for cumulative update 4577470.

Note

Some files erroneously have "Not applicable" in the "File version" column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.

September 8, 2020 Servicing Stack Update (KB4577558)

This update includes quality improvements for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This update makes quality improvements to the servicing stack, which is the component that installs updates. Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

How to get this update

The September 8, 2020 servicing stack update (KB4577558) for Azure Stack HCI is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

Restart information

You don't have to restart your computer after you apply this update.

Removal information

Servicing stack updates (SSUs) make changes to how updates are installed and cannot be uninstalled from the device.

File information

For a list of the files that are provided in this update (OS Build 17784.1220), download the file information for cumulative update 4577558.

References

For information on SSUs, see the following articles:

Learn about the terminology that Microsoft uses to describe software updates.

August 11, 2020 Security Update (KB4574585)

This update includes improvements and fixes for the Public Preview release of Azure Stack HCI.

Improvements and fixes

This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

How to get this update

The August 11, 2020 security update (KB4574585) for Azure Stack HCI is delivered via Windows Update. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

File information

For a list of the files that are provided in this update (OS Build 17784.1162), download the file information for cumulative update 4574585.

Note

Some files erroneously have "Not applicable" in the "File version" column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.