Shahzad,
Our installer is not compatible with passive installation. If you need one, you should have no trouble making it yourself. Just take UltiDev.WebServer.msi file that can be found in "%ProgramFiles%\UltiDev\Web Server\Redist\Visual Studio" folder, and package it in a self-extracting archive that would execute something like "msiexec /i UltiDev.WebServer.msi /passive" upon extraction.
Please let us know if this information was helpful.
Best regards,
UltiDev Team.
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