Trouble with msi exit code 1625 when running msi programmatically

Question

Exit code 1625 is "This installation is forbidden by system policy. Contact your system administrator."

What I'm doing is calling it this way:

Process installProcess = Process.Start(msiPath, "/quiet");

I can run the msi fine if I open it manually. This is on windows server 2008...

The intent of this is to automatically update my .net forms program with the latest version. Anybody have a clue what sort of setting is causing this? I mean, the clients are going to be using vista/7/xp, but I still need to know what kind of security settings will ruin my plan.

Answer 1

ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.Arguments = "/i " +  "\""+Directory.GetCurrentDirectory()+"\\"+msiPath +"\"" +" /q";
startInfo.FileName = "msiexec.exe";
startInfo.Verb = "runas";


Process installProcess = Process.Start(startInfo);

Calling the msi this way did the trick.

Turned out to be some kind of UAC issue I think. The runas verb somehow elevates the permissions the program has. Even though my UAC prompts were disabled on server 2008 I still had to do this to get around it.. strange huh?