System.Environment.UserName in a .net setup project gives me SYSTEM

Hi,
when starting my application from autostart or by an icon-click System.Environment.UserName gives me the logged in user's name. I want this.

When starting from a .net setup project (on finish) System.Environment.UserName gives me "SYSTEM". I don't want this.

Grateful for an answer!
JonasxxAsked:
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Craig WagnerSoftware ArchitectCommented:
I know that MSIExec does some of its work under a LocalSystem process, so that's probably what's happening. Have you tried using WindowsIdentity.GetCurrent().Name instead? It might give you the same result, but it's worth a try.
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JonasxxAuthor Commented:
WindowsIdentity.GetCurrent().Name is the same. I guess a part of the problem is that there can be many user logged in at the same time, solved it by in System.Management.
if (System.Security.Principal.WindowsIdentity.GetCurrent().IsSystem)
                    {
                        ConnectionOptions co = new ConnectionOptions();
                        ManagementScope ms = new ManagementScope(@"\\localhost\root\cimv2", co);
                        ObjectQuery oq = new ObjectQuery("SELECT * FROM Win32_ComputerSystem");
                        ManagementObjectSearcher searcher = new ManagementObjectSearcher(ms, oq);
                        ManagementObjectCollection collection = searcher.Get();
                        foreach (ManagementObject mo in collection)
                        {
                            userName = mo["UserName"].ToString();
                            int position = userName.LastIndexOf(@"\");
                            if (position != -1)
                            {
                                userName = userName.Substring(++position);
                            }
                            break;
                        }
                    }
                }

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