This page describes the currently supported Windows versions for the key components.
Optimization Tool executable (EXE)
This component's file name has the pattern OmnissaHorizonOSOptimizationTool and file type exe when downloaded from Omnissa Customer Connect.
The Optimization Tool EXE is supported to optimize the operating system for the following Windows versions:
- Windows 10
- Windows 11
Note: Starting with version 2503, the Optimization Tool EXE is supported on Windows 11 24H2. To optimize Windows 11 24H2, use version 2503 of the Optimization Tool EXE. Earlier versions of the Optimization Tool EXE are supported on Windows 11 versions other than Windows 11 24H2.
Starting with version 2506, the Optimization Tool EXE is supported on Windows 11 25H2. To optimize Windows 11 25H2, use version 2603 of the Optimization Tool EXE. Earlier versions of the Optimization Tool EXE are supported on Windows 11 versions other than Windows 11 25H2. - Windows Server 2019
- Windows Server 2022
- Windows 11 25H2
- Windows Server 2025
Note: Due to an intermittent issue, after deployment of a Windows 11 24H2 operating system into the VM is completed, you must manually restart the VM before running the tool's Optimize step.
Omnissa MDT Plugin
The Omnissa MDT Plugin won't work where the Microsoft Deployment Toolkit (MDT) doesn't work.
Please be aware that Microsoft states official support for running Microsoft Deployment Toolkit only on specific Windows operating systems listed in this Microsoft MDT download page System Requirements list.
While you might find that you can install and run Microsoft Deployment Toolkit without problems on Windows operating systems not listed at Microsoft MDT download page.
However, if the Microsoft Deployment Toolkit doesn't function on the operating system you're using, then the Omnissa MDT Plugin also won't function on that operating system.
For example, Microsoft Deployment Toolkit doesn't function on Windows 11 24H2. Because Microsoft Deployment Toolkit doesn't function on Windows 11 24H2, the Omnissa MDT Plugin also won't function on Windows 11 24H2.
This component's file name has the pattern OmnissaHorizonOSOptimizationMDTPlugin and file type zip when downloaded from Omnissa Customer Connect.
Important: The version 2503 of the Omnissa MDT plugin is not compatible with earlier versions of the Optimization Tool EXE. Please ensure that you use the MDT plugin with the corresponding Optimization Tool EXE version.
Omnissa allows use of the Omnissa MDT Plugin on:
- Windows Server 2019
- Windows Server 2022
- Windows 10
- Windows 11 (except 24H2). As described above, if the Microsoft Deployment Toolkit doesn't work without problems on the operating system, then the Omnissa MDT Plugin won't work on that operating system. Because Microsoft Deployment Toolkit doesn't function on Windows 11 24H2, the Omnissa MDT Plugin also won't function on Windows 11 24H2.
Omnissa MDT Automation Tool - Unsupported
Even though Omnissa has a tool named Omnissa MDT Automation Tool, due to a known issue, that tool doesn't work and shouldn't be used. Therefore, the Omnissa MDT Automation Tool is not supported.
You can get a Microsoft Deployment Tool (MDT) server up and running manually. Refer to the Microsoft documentation Get started with MDT. Additional guidance is provided at the Omnissa Tech Zone's location Manual Deployment Server Build and Configuration.
Notes about Using the Optimization Tool EXE and the MDT Plugin on Windows versions not specifically listed above
Even if Microsoft says its Microsoft Deployment Toolkit is functional for certain operating systems, Omnissa's Optimization Tool executable (EXE) and Omnissa MDT Plugin follow the compatibility rules below.
Optimization Tool executable (EXE)
The Optimization Tool executable (EXE) is not compatible with Windows 7, Windows 8.1, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2025, and Windows Datacenter 2025.
Omnissa MDT Plugin
The Omnissa MDT Plugin is not currently compatible with Windows 7, Windows 8.1, Server 2012, Server 2012 R2, Server 2016, Server 2025, and Datacenter 2025, and Windows 11 24H2.
As stated above, if the Microsoft Deployment Toolkit doesn't work on the operating system you're using, then the Omnissa MDT Plugin also won't function on that operating system.
For example, Microsoft Deployment Toolkit doesn't function on Windows 11 24H2. Because Microsoft Deployment Toolkit doesn't function on Windows 11 24H2, the Omnissa MDT Plugin also won't function on Windows 11 24H2.
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