George Karnos
Ansys Employee

Hello,
Can you post the exact error message?

You appear to be using incorrect flags for our setup.exe program.  You are using the following command:setup.exe -s -f1setup.iss -f2setup.log
This seems to be for an InstallShield installer but our team does not maintain such an installation.  The command-line for a silent installer using our software would look similar to the following:setup.exe -silent -install_dir "C:\Program Files\ANSYS Inc" -licserverinfo 2325:1055:companylicserver
You can check the installation guide for silent installation. Chapter 6.
C:\Program Files\ANSYS Inc\ANSYS Student\v231\installer\util\installHelp.pdf
 
Seems like you managed to get it partially working using your original command but again, that would suggest you are using an InstallShield installation which wouldn't be one that we created.