Overview
This page covers the release notes for HyWorks v4.1 Hotfix 2.1 (Cumulative Release that includes changes from HF1 and HF1.2), including new features, enhancements, and bug fixes.
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Release Date: September 08, 2026
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Last modified on: September 09, 2026 (Nutanix Utility details added.)
Important
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HyWorks v4.1 HF2.1 is a cumulative release including all HF1, HF1.2 and HF2 changes.
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Nutanix Issue Fixed: The issue with APIv4.2 (introduced in HyWorks v4.1-HF2 with Prism Central v7.3 or above) not supporting the Clone from recovery point and preserve MAC together is fixed in this release of HyWorks v4.1-HF2.1.
- Any deployments having Prism Central v7.3 or greater up to the latest supported version should use APIv4+APIv4.2.
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Open Issue with Nutanix APIv4: Nutanix Prism Central configured with APIv4 still has an issue where cloning from a recovery point does not work correctly; instead, it clones from the current state of the Gold Master.
- Administrators are encouraged to upgrade the Nutanix environment to Prism Central v7.3 and use APIv4+APIv4.2.
Important for Nutanix Connector Migration:
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A separate utility is released for Nutanix migration on 9th September. The utility will help administrators plan and understand which pools require migration.
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Detailed instructions on Nutanix Connector Migration are available on the Nutanix Connector page.
HyWorks Components
| Module | Version | Remarks | Download location |
|---|---|---|---|
| HyWorks Controller Patcher [HyWorks_Patcher_v4.1-HF2.1.exe] |
4.1.0.23929 HF2.1 | HyWorks Controller Patch for HyWorks Controller Service, Management Console, HyLabs Service, AHM, and API Components | The download link is available in this Support Article. |
| HyWorks VM Scale Booster [HyWorks_VMScaleBooster_v4.1-HF2_v4.1.0.185.exe] |
4.1.0.185 | VM Scale Booster release compatible with HyWorks v4.1-HF2.1. | The download link is available in this Support Article. |
| Nutanix Utility [NutanixUtility_v1.1.0_20260909.zip] |
1.1.0 | Nutanix utility to assist in migration from PE (APIv2) or PC (APIv3) to PC (APIV4). The Nutanix Utility Admin Guide can be accessed from here. |
The download link is available in this Support Article. |
Upgrade Compatibility of this Release
- The v4.1-Hotfix2.1 patch can be applied to HyWorks Controllers running v4.1.0.23929 or v4.1.0.23929 with HF1/HF1.2.
All Latest HyWorks Modules
The table below lists all the latest releases of HyWorks, which are recommended to be used:
This document provides details of all the latest releases of all HyWorks modules.
- Last modified on: September 08, 2026
Controller and VM Scale Booster Compatible Versions
HyWorks VM Scale Booster is tightly coupled with HyWorks Controller due to database dependencies. Below is the table of HyWorks- and VM Scale Booster-compatible versions.
This document provides details of the HyWorks Controller and compatible HyWorks VM Scale Booster versions.
- Last modified on: September 08, 2026
| Latest Controller Version | Compatible VM Scale Booster Version | Remarks (if any) Controller and Scale Booster work only with compatible versions. |
|---|---|---|
| v4.1 + HF2.1 (Controller) | v4.1.0.185 | Scale Booster released to support single-session desktop disconnection state and session management. |
| v4.1 + HF2 (Controller) | v4.1.0.174 | Scale Booster released to support time zone differences between the controller and the database server. |
| v4.1 + HF1.2 (Controller) | v4.0.0.170 | Scale Booster released to support ARS configuration workflows and changes to send non-heartbeat events to the controller. |
| v4.1 (Controller) | v4.0.0.169 | Scale Booster release to support HyWorks v4.0 features. |
| v4.0 (Controller) | v4.0.0.169 | Same as above. |