Changes
→CLI / command line mode
msiexec /qb /i WPKGSetup.msi SETTINGSFILE=\\server\deploy\settings\settings.xml ALLUSERS=1
it is important to set the ALLUSERS variable, or at the first wpkginst run the permisisons/ACL of the folder %PROGRAMFILES%\WPKG will be totally blankedpreventing the wpkg service to run at next boot.