Hi, I had a similar problem, until I noticed that the installer complained about a file missing. The installer wants to run LUSETUP.EXE during install, so just download the newest LiveUpdate from Symantec, rename it LUSETUP.EXE and replace the original in the installer folder. Thanks, I only have these files in the install folder: data1.cab, SAV.msi, VDefhub.zip Is there more to it now? Isn't the LUSETUP.EXE in the SAV.msi? Also, do I need the msiexec /i before the actual command? as in msiexec /i c:\Apps\SAV\SAV.msi ADDLOCAL=SAVMain,SAVUI,SAVHelp,EMailTools,OutlookSnapin NETWORKTYPE=2 REBOOT=ReallySuppress /qn