The Silent Install options for the Windows installer (msiexec)

/quiet, /q, qn	Fully silent mode
/passive	Unattended mode, shows progress bar only.
/norestart	Do not restart the system after the installation
/forcerestart	Restart the system after installation is complete
/log, /l	Enable Logging

Silently install the msi package:

msiexec /i C:\setup.msi /qn

Silently install the msi package, no reboot

msiexec /i C:\setup.msi /qn /norestart

Silently install the msi package and write the installation log to file C:\msilog.txt

msiexec /i C:\setup.msi /l*v C:\msilog.txt /qn

Silently uninstall the msi package:

msiexec /x C:\setup.msi /qn

Silently uninstall the msi package by the product code:

msiexec /x {XXXXXXXX-9215-4780-AAC6-01FD101DC931} /qn