The add-on Cortona 3D Viewer is not included in the Insight Setup.exe package, but is provided separately on the Insight distribution media in the subfolder Add-ons (cortona3d-viewer-32bit.msi resp. cortona3d-viewer-64bit.msi).
This package can be installed using the following command:
msiexec -i"cortona3d-viewer-64bit.msi" /qn /log C:\temp\cortona_install.log
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