If you are trying to install Graphical Analysis/Spectral Analysis/Instrumental Analysis to a single computer, we recommend the regular installer, which is free at:

If you are an IT professional at a school and want to install these applications to a large number of Windows computers managed using tools like Group Policy or SCCM, read below:

Download the silent installer (MSI) for Graphical Analysis.
Download the silent installer (MSI) for Spectral Analysis.
Download the silent installer (MSI) for Instrumental Analysis.


You also need to install the 2017 Microsoft Visual C x86 redistributable in order to run these applications. That installer is included in the zip file and can be installed silently with “vc_redist.x86.exe /q”.

On Windows 7 you must install KB2921916. See
Issues with the silent installer with Logger Pro on Windows 7

See also
I get a Javascript error when I try to run Graphical Analysis on Windows.
Is there a way to activate Graphical Analysis Pro at install time?