I have basic msi projet, that shall install audio codec G723A32 using G723A32.ACM file. This requires simply to distribute the file into target computer system folder (System32) and create two registry entry. The Audio codec shall be registered after installation and some additional registry entry shall be created into Microsoft node. But this is not happening when I use Basic MSI project type, it only happens when I use the Installscript project type. It seems like the Basic MSI has some limitation in rights (like admin rights). Both project are setup to run as Administrator, but still, one does not work. I tried the same thing with InstallScript project type and it worked just fine. I dont know why? What is the different between Basic MSI and InstallScript? How can I make my Basic MSI project to work? There is no dependency on other components/features.     ‎ I did some testing and I found out how to install the audio codec manually and if I do that, the basic MSI project works too. Steps to test it: Start clean installation of Windows (virtual machine). Copy   G723A32.ACM   file into   C:\Windows\System32 Create Registry entry to register codec file: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32 msacm.g723a32acm=g723a32.acm Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\drivers.desc g723a32.acm=G723 ADPCM Audio CODEC These steps install the audio file. I did all of these, then I removed these steps from my installshield basic msi project and I built the app without installation of audio codec. Then I installed this new build on the test machine with manually installed audio codec and it works just fine. So the issue seems to be in BASIC MIS project type and replicating these steps. Can you help me?   ... View more