Learn how to use VMware’s OS Optimization Tool – TechTarget | Hot Mobile Press

One way to optimize Windows operating systems is to remove components and stop certain functions. You can manually browse the settings to find features that may be consuming unnecessary resources, such as B. Search indexing. For features that are not easily identified, VMware’s Windows OS Optimization Tool can help.

VMware OSOT is a free utility that you can use for VMware Virtual Desktop Infrastructure (VDI) desktops, server VMs, and physical PCs and servers. It allows you to tweak Windows operating systems to your specifications. This utility works best for virtual environments running VMware technology.

What is the VMware OS Optimization Tool?

Whether you have a physical server, PC or VM, you can use OSOT to make your system run smoother and faster. You can enable or disable system services and Group Policy Objects (GPOs), or apply registry settings to optimize the system’s operating system.

This program originated as VMware Fling. Starting with version 2111, it is now available as a free download as part of the official VMware product release cycle.

The OS Optimization Tool is part of the VMware Flings line of small system tools created by VMware engineers and the community.

Features of the VMware OS Optimization Tool

optimize the system. This tool allows you to optimize a system based on a template. You can tweak a variety of options and variables in the registry, services, or GPOs for each operating system.

Templates. You can create your own templates for your data center and share these custom templates with the community. You can also download or comment on templates shared by others.

generalize option. The Generalize option is similar to Microsoft Sysprep software. This allows you to remove all computer-specific information when saving an image of your system. This is especially useful for VDI creation that requires a clean template.

remote analysis. The software can analyze a remote server or workstation. To ensure network security, you must have your network credentials to perform remote analysis.

remote analysis
To perform remote analysis, you must have network credentials, including hostname, username, domain name, and password.

You can use the current version of OSOT to optimize the following Windows systems:

  • Windows11
  • windows 10
  • Windows Server 2022
  • Windows Server 2019

For Windows 7, 8.1 and Windows Server 2012, 2012 R2 and 2016 you can use older versions of the tool.

What are the common use cases for OSOT?

VDI. VMware developed OSOT to optimize VDI environments – particularly those that require your desktop VMs to be as fast as possible and consume fewer resources. Through Applying an optimized template to your desktop VMs, you can launch virtual desktops much faster than if the systems were not optimized.

Virtual Servers. You can apply OSOT to Windows servers to make their VMs consume fewer resources and perform better. This approach allows you to run more VMs on the same hardware resources.

physical systems. You can also use OSOT on physical computers such as workstations or laptops. This way you can optimize your entire infrastructure with the same tool to achieve good performance and security results.

How to optimize a system

When you start the software for the first time, click Analyze Button. Once the tool has completed its analysis, the software will choose a template for your system, but double-check that it’s the one you want to use.

Once you’ve checked everything, you can decide whether you want to enable or disable certain features. Default results are from VMware’s template, so your mileage may vary depending on different feature selections or using your own custom template.

Going through this entire list can be time consuming. But you only create a gold image every once in a while, so knowing the exact configuration of an image can save time. This knowledge will also help you create a template that is optimized for future deployments.

Then click the Optimize Button that starts system optimization by optimizing registry and service configurations.

Optimize with OSOT
Optimize your system according to the selected template.

OSOT optimizes your operating system based on your template and your changes. When finished, it provides a report of what it did and what errors it encountered. You can export this report as an HTML file.

If you need to optimize your operating system for VMware Horizon or any other VDI product, go to To lock tab and run the To lock Function. This will clean the system before shutting down so you can use it as a template to clone all of the desktop VMs running in your VDI.

You can discover the stored resources of an optimized golden image without extensive testing. The image below shows Task Manager output on a computer before (left) and after (right) optimization.

VMware OSOT results
A comparison of the system before and after using VMware OSOT

The output shows that the number of background processes has dropped from 51 to 43, the number of Windows processes has dropped from 93 to 82, and the amount of memory used has dropped from 2.1GB to 1.9GB.

Beyond the template’s suggestions, there are general Windows options that you can configure via Common Options special feature. This feature allows you to toggle Windows updates and visual effects options. You can also remove any Windows Store applications that may be taking up disk space from the image.

If you want to roll back the changes to your system, go to story Select the date you want to return to, then click Reset to default Button.

The system will then discard any changes made since that date and restore your operating system to its original state.

Create your own OSOT templates

Previous OSOT versions contained templates supported by the community. The current iteration of the tool has read-only templates, but you can copy them to create a customizable version.

The image below shows the template menu with an advanced background color setting. After editing this setting, you can save your selection in the template.

Customize templates in OSOT
Check out how to configure specific template settings

Template creation is beneficial when creating another golden image. The template offers the same settings and ensures that the new golden image is already optimized for your organization’s infrastructure. The template is in an XML file so you can edit the file before importing or compare two templates with a diff editor to find differences.

Custom OSOT template XML file
You can have custom template as XML file for easier editing and sharing.

Once you change any applicable settings and then save the file, your template can be used in another environment or shared with administrators; With your template, they can also optimize each golden image and choose to use the same operating system settings.

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