You can install Astah in silent mode with the following command.
e.g: Installing Astah Professional 8.0
astah-professional-8_0_0-d641d4-jre-64bit-setup.exe /verysilent
If you would like to install Astah to a specific directory, use /DIR option.
astah-professional-8_0_0-d641d4-jre-64bit-setup.exe /verysilent /DIR="the destination of installataion folder"
- License file (.xml) should be directly saved in the Astah Installation folder.
- If you have a Faculty Site License, a license file(.xml) should be renamed when directly saving in the Astah Installation filder.

"astah_faculty_license.xml" -> "astah_professional_license.xml"

"astah_faculty_license.xml" -> "astah_sysml_license.xml"

"astah_faculty_license.xml" -> "astah_gsn_license.xml"