The GFI WebMonitor agent can be installed silently. This article provides the general steps required for achieving this.
Download the GFI WebMonitor Agent's .msi file (32-bit or 64-bit) from the WebMonitor Console.
Open an elevated command line and change the directory to the folder to which the .msi file was downloaded.
Execute the following command, depending on your installation file:
msiexec /i gfiwebmonitoragent_x64 /l*v c:\log.txt SERVERADDRESS="servername.domain" /qn
msiexec /i gfiwebmonitoragent_x86 /l*v c:\log.txt SERVERADDRESS="servername.domain" /qn
C:\drive to assist with troubleshooting any problems during the installation.