Deciding to Optimize the Windows Image When Using the Import Virtual Machine from Marketplace Wizard

The Import Virtual Machine from Marketplace wizard has an option for configuring the Microsoft Windows operating system in the imported virtual machine (VM) with some specific optimizations. With that option selected, the image creation process results in a VM that is configured in a way that helps prevent failures during the subsequent publishing action on that VM in Horizon Cloud. This wizard option is available for all of the operating systems provided in the Import Virtual Machine wizard.

Important: This wizard option is not the equivalent of running the Omnissa Operating System Optimization Tool (OSOT) and having that tool optimize the VM. Enabling the option in the Import Virtual Machine wizard does not perform the same things that the Omnissa Operating System Optimization Tool does and does not run the OSOT tool in the VM.

The resulting settings depend on which Windows operating system is installed in the imported VM.

All Windows Operating Systems

When the optimizing option is selected, the image creation process deactivates the Windows Update feature by:

• Adding a registry property to prevent automatic updates. The property's value is set to 1.

  Path	HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
  Property name	NoAutoUpdate
  Property value	1

• Stopping and deactivating the wuauserv service. This system service is used by the Windows Update feature.

Windows 10 Client and Windows 10 Enterprise Multi-Session Operating Systems Or Later

When the optimizing option is selected, the import VM process deactivates these scheduled tasks, if present.