Is this the correct format?

"%CDROM%\WinReducerPI\vpnclient_setup.msi" /silent /norestart

is that correct or do i have to play /silent /norestart inside the "" ?

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ALSO: is it possible to run something like this? If so how do I properly format it?:

msiexec.exe /i tightvnc-2.5.2-setup-64bit.msi /quiet /norestart
SET_USEVNCAUTHENTICATION=1
VALUE_OF_USEVNCAUTHENTICATION=1
SET_PASSWORD=1
VALUE_OF_PASSWORD=mainpass
SET_VIEWONLYPASSWORD=1
VALUE_OF_VIEWONLYPASSWORD=viewpass
SET_USECONTROLAUTHENTICATION=1
VALUE_OF_USECONTROLAUTHENTICATION=1
SET_CONTROLPASSWORD=1
VALUE_OF_CONTROLPASSWORD=admpass

the format should be correct, to be sure you could replace the %CDROM% with the path where you saved this file and try to run it via terminal (Win Key + R -> cmd)

if the programm starts and installs it is ok,

the second answer :

that should be also correct. but i dont know if you need the "msiexec.exe /i" , also you need the path like in the first question like "%CDROM%\tightvnc-2.5.2-setup-64bit.msi"