March 9, 2021 Security Update (KB5000801)

Release Date:

Version:

3/9/2021

OS Build 17784.1589

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.

To return to the Azure Stack HCI documentation site

Known issues in this update

Symptom

Workaround

After installing this update, you might receive an APC_INDEX_MISMATCH error with a blue screen when attempting to print to certain printers in some apps.

This issue is resolved in KB5001343.

How to get this update

The March 9, 2021 security update (KB5000801) for Azure Stack HCI is delivered from the release channels below. To install it on your Azure Stack HCI cluster, see Update Azure Stack HCI clusters.

Install this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

Yes

None. This update will be downloaded and installed automatically from Windows Update.

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Windows Server Update Services (WSUS)

Yes

This update will automatically sync with WSUS if you configure Products and Classifications as follows:

Product: Azure Stack HCI

Classification: Security Updates

File Information

For a list of the files that are provided in this update, download the file information for cumulative update 5000801.

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