Is it possible to install VisualARQ silently?

Yes, it is.
  1. Run the .msi of VisualARQ with the following command line:
    • In Rhino 5: msiexec.exe /i “VisualARQ-Rhino5.msi” /qn LICENSE_ACCEPTED=”1″ LICENSE_MODE=”4″
    • In Rhino 6: msiexec.exe /i “VisualARQ-Rhino6.msi” /qn LICENSE_ACCEPTED=”1″ LICENSE_MODE=”4″
    • In Rhino 7: msiexec.exe /i “VisualARQ-Rhino7.msi” /qn LICENSE_ACCEPTED=”1″ LICENSE_MODE=”4″
  2. Replace “VisualARQ-Rhino5.msi” (Rhino 5),  “VisualARQ-Rhino6.msi” (Rhino 6), or “VisualARQ-Rhino7.msi” (Rhino 7)  with the msi name of the VisualARQ version you need to install.
The license mode value corresponds as follows:
  • 1 = free
  • 2 = evaluation
  • 3 = standalone
  • 4 = network
  • 5 = cloud (*)
(*) Not available in Rhino 5