---
title: "Version 4.5"
slug: "epic-auth-plugin-release-notes-45"
updated: 2026-11-06T19:33:55Z
published: 2026-11-06T19:33:55Z
canonical: "healthcare.rapididentity.com/epic-auth-plugin-release-notes-45"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://healthcare.rapididentity.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Version 4.5

The 4.5 release has support for additional virtualization technologies, allowing XA and the Epic Auth Plugin to interact with Hyperspace instances published as a Remote App in Citrix, Azure Virtual Desktop (AVD) and Omnissa Horizon. It also added additional support for Epic Willow Ambulatory (WAMB) integration.

## Highlights

- Support for Azure Virtual Desktop (AVD)
- Support for Omnissa Horizon
- Support for Epic Willow Ambulatory (WAMB)

These release notes contain a comprehensive list for the Epic Authentication Plugin for Hyperdrive version 4.5.x.

## Version 4.5.1.19

#### Issues Resolved

- **HEALTH-1890:** Horizon App Launcher starts duplicate Hyperdrive when Hyperspace window is not yet created

---

## Version 4.5.1.18

#### Issues Resolved

- **HEALTH-501:** Hyperdrive - Authentication window not centered
- **HEALTH-1827:** 4.5.1: Backport COM Hold fix and add HCITFAProxAPI.clsDirect to prevent HCINoParity.dll crash during reauthentication
- **HEALTH-1832:** Fix secondary auth freeze and 0xc000041d crashes by correcting COM holds
- **HEALTH-1837:** Secondary auth freeze in 4.5.1.16 due to COM threading deadlock
- **HEALTH-1841:** 4-5 second authentication delay on Citrix servers without XA Client due to RDS virtual channel timeout
- **HEALTH-1843:** Timer fails to detect XA Client login when Hyperspace starts first in RDS/Horizon non-locking kiosk mode

---

## Version 4.5.1.14

#### New Features

- Support for Azure Virtual Desktop (AVD)
- Support for Omnissa Horizon

#### Issues Resolved

- **HEALTH-1303** .NET 4.8 upgrade.
- **HEALTH-1335:** login failure after long idle
- **HEALTH-1690:** Non-locking kiosk mode - XA log off not syncing logged out state to Hyperdrive
- **HEALTH-1784:** DigiCert signing migration.

---

## Version 4.5.0.4

- Added Willow Ambulatory (WAMB) integration