Which file is required to perform a BigFix installation with a new serial number?

To perform a BigFix installation with a new serial number, you need to have a license authorization file from the BigFix License Key Center site. This file contains the information about your license purchase and the serial number. You need to enter thisfile during the installation process to request and get the license certificate file (license.crt) and the private key file (license.pvk). These two files together complete your license. You also generate the masthead file (masthead.afxm) during the installation, which contains the information about your BigFix deployment. References:

Managing licenses

Installation Instructions

Admin site key for installation