Hi all!

I need some help here with silent installing an MSI file. I already have a program installed in a computer (it was installed with a Setup.exe), and I have to do a silent install of a new version of the program (now as an MSI file). I have to replace the old version with the new version. I'm trying this:

msiexec /fa "c:\MyProg.MSI" /q USERNAME=MyName COMPANYNAME=MyCompany INSTALLDIR="c:\Program Files\MyProg"

however, that doesn't seem to be doing anything... the program is not updated, I don't see any error message... nothing happens...

If I change the switch "/fa" (which is meant to "replace all files") to "i" (meant to "install"), it will install the app, but without removing the old one...

Any ideas (because I ran out of them)? :)

TIA