Related topics

Release Date:



OS Build 17784.1408

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 theĀ Security Update Guide.

To return to the Azure Stack HCI documentation site

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 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.


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

Need more help?

Expand your skills


Get new features first


Was this information helpful?

What affected your experience?

Thank you for your feedback!