Specifies whether the Windows image should be applied with compression enabled during installation. If set to true, files written to the disk during installation are compressed individually, which allows Windows to take up less disk space.

Note   If the Compact setting is set to true, you must start Windows Setup from Windows 10 for desktop editions (Home, Pro, Enterprise, and Education), from a previous version of Windows with the Windows 10 Assessment and Deployment Kit (ADK) installed, or from the Windows 10 version of the Windows Preinstallation Environment (PE). If you are using a previous version of Windows PE, the Windows overlay filter driver (wofadk.sys) from the Windows 10 ADK must be included in the Windows PE image.


Value Description


Specifies that Windows should be installed with compression enabled. This might cause the installation process to take longer.


Specifies that Windows should be installed with compression disabled.

This is the default value.

Valid Configuration Passes


Parent Hierarchy

microsoft-windows-setup- | ImageInstall | OSImage | Compact

Applies To

For the list of the supported Windows editions and architectures that this component supports, see microsoft-windows-setup-.