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How do I correctly start a process with administrator rights?

So I've looked at alot of different SO posts, I've been on codeproject and dreamincode aswell but I cant for the life of me find out how to CORRECTLY start a process on Windows 8.1 with admin rights.
This is my code.
I'm trying to create a silent install of FireFox but everytime I give it the filepath it still promts me with the UAC, and I thought that running as admin would work. What am I doing wrong here?
Console.WriteLine("Please enter the path to the application: ");
string path = Console.ReadLine();
ProcessStartInfo psi = new ProcessStartInfo();
psi.UseShellExecute = true;
psi.Verb = "runas";
psi.Arguments = "/s /v /qn /min";
psi.CreateNoWindow = true;
psi.WindowStyle = ProcessWindowStyle.Hidden;
psi.FileName = path;
Process.Start(psi);

C# System.Diagnostics.Process launches on my local IIS, but doesn't launch on the server

I'm trying to make my program to run a bat file, that launches an exe file. It works fine on my local computer, but doesn't work on the server IIS. It doesn't work regardless of whether I specify the username and password in the ProcessStartInfo or not. I've searched forums and applied different stuff, but none of them help.
In Windows event viewer it doesn't give me any errors as well as the process output. If I change a directory and it can't find the bat file, the output gives me an error, but when it finds the file, it doesn't return anything and just doesn't launch the program.
Now, if I provide a credentials for the process, specifying psi.Domain, psi.UserName and psi. Password, the StandartOutput doesn't return any error, but Windows Events gives me two following errors:
Application popup: cmd.exe - Application Error : The application was unable to start correctly (0xc0000142). Click OK to close the application.
And
Application popup: conhost.exe - Application Error : The application was unable to start correctly (0xc0000142). Click OK to close the application.
Here's the code:
System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo(#"C:\inetpub\CopyToAD\pspasswd\passchange.bat");
psi.RedirectStandardOutput = true;
psi.RedirectStandardInput = true;
psi.RedirectStandardError = true;
psi.CreateNoWindow = true;
psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
psi.UseShellExecute = false;
System.Diagnostics.Process listFiles;
listFiles = new System.Diagnostics.Process();
listFiles.EnableRaisingEvents = false;
listFiles.StartInfo = psi;
listFiles.Start();
System.IO.StreamReader myOutput = listFiles.StandardOutput;
listFiles.WaitForExit(2000);
myOutput.ReadToEnd();
string output = myOutput.ReadToEnd();
ViewBag.View6 += output + "***";
if (listFiles.HasExited)
{
output = myOutput.ReadToEnd();
ViewBag.View6 += output;
}

cscript crashes when starting a process from ASP.NET Application

I´m having a problem with my ASP application. I´m getting an error from the cscript when I run a process on the server.
When I debug locally the page just works fine and the process is executed correctly, but when I deploy the application to the IIS and run it from another machine explorer it crashes when the process starts.
I imagine it was a matter of the user, so I added this line to the web.config, to ensure that.
<identity impersonate="true" userName="domain\user" password="password" />
Then, I added the user that I wanted the process to start with but the page keeps crashing. The error that I get in the server side each time the process is launch (when a button is pressed) is:
cscript.exe - Application Error
The application failed to initialize properly (0xc0000142). Click on OK to terminate the application
The code that launches the process is:
public static void actualizarPersona(csPersona persona)
{
string nombreArchivo = "card.js";
File.WriteAllText(nombreArchivo, persona.setFileActualizarPersona(persona), Encoding.GetEncoding(1252));
Process proc = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.CreateNoWindow = true;
startInfo.UseShellExecute = false;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardError = true;
startInfo.FileName = "cscript.exe";
startInfo.Arguments = nombreArchivo;
startInfo.WindowStyle = ProcessWindowStyle.Hidden;
startInfo.UserName = "Administrator";
SecureString password = new SecureString();
string contraseña = "myPassword";
foreach (char c in contraseña)
{
password.AppendChar(c);
}
startInfo.Password = password;
proc.StartInfo = startInfo;
proc.Start();
proc.WaitForExit();
proc.Close();
proc.Dispose();
}
Does anyone have any idea of what may be happening?. I´ve been stuck here for a while today.
Thanks you.

You may need to load the user's profile
startInfo.LoadUserProfile = true
Edit
Try creating a new app pool with a a new admin account. If that works remove the user from the admin group and create a new group with the necessary permissions for the app.
(see trying to run a process from an asp.net application)

How to shutdown machine from ASP.NET

I have a machine running Windows Home Server v1 (WHS is based on Windows Server 2003 and is runningh IIS6) and on here I have a restful webservice running which I build in C# VS2008 (dotnet 3.5). From within the webservice I want to be able to;
1 Check that certain windows services are running;
2 Start certain windows services
3 Stop certain windows services
4 Reboot the machine
5 Shutdown the machine
For 1-3 then I am using impersonation to elevate the ASPNET user to the local administrator (it is only me running this on a local secure network) and then "ServiceController" to control the services. This works perfectly.
For for 4 & 5 I am having issues and can't get it to work.
If I use System.Diagnostics.Process to call the "shutdown.exe" command with the parameters "/s /f" then the process executes without any errors but does not do anything! No shutdown, no exception nothing and I can't work out why. I have tried setting the local admin username & password but it does not help, and the impersonate user call does not help.
My code
string shut_args = "/s /f /t 10";
Process process1 = new Process();
process1.StartInfo.FileName = "shutdown.exe";
process1.StartInfo.WorkingDirectory = Environment.GetFolderPath(Environment.SpecialFolder.System);
SecureString password = new SecureString();
foreach (char c in "mypassword")
password.AppendChar(c);
process1.StartInfo.Password = password;
process1.StartInfo.Domain = "homeserver";
process1.StartInfo.UserName = "Administrator";
process1.StartInfo.Arguments = shut_args;
process1.StartInfo.CreateNoWindow = true;
process1.StartInfo.UseShellExecute = false;
process1.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
impersonateValidUser();
process1.Start();
So instead I tried to use WMI (code taken from another post on here) but here I get an "Privilege not held" error when trying to call InvokeMethod
Mycode
ManagementBaseObject mboShutdown = null; ManagementClass mcWin32 = new ManagementClass ("Win32_OperatingSystem"); mcWin32.Get();
mcWin32.Scope.Options.Impersonation = ImpersonationLevel.Impersonate;
mcWin32.Scope.Options.Authentication = AuthenticationLevel.Connect;
mcWin32.Scope.Options.EnablePrivileges = true;
ManagementBaseObject mboShutdownParams = mcWin32.GetMethodParameters("Win32Shutdown");
// Flag 1 means we want to shut down the system. Use "2" to reboot.
mboShutdownParams["Flags"] = "1";
mboShutdownParams["Reserved"] = "0";
foreach (ManagementObject manObj in mcWin32.GetInstances())
{
mboShutdown = manObj.InvokeMethod("Win32Shutdown", mboShutdownParams, null);
}
I have also been through all of my security settings for the ASPNET and NETWORK_SERVICE user and they have rights to shutdown the server, the WMI security settings are also set-up for these users. But I just can't figure out what is wrong.
Any ideas?
Cheers

Have you tried to run a simple batch file instead of starting up the shutdown process in ASP.NET ?
The whole process is described here: remote shutdown/restart using ASP.NET

Old question, but I wanted to do this myself, and just figured out the answer. So try this:
Process process = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.FileName = "shutdown";
startInfo.Arguments = "/s /t 5";
startInfo.UseShellExecute = true;
startInfo.Verb = "runas";
process.StartInfo = startInfo;
process.Start();

I want PDF file print into network print

I want PDF file print into network print
Following code where used, it work fine in local host (development area) but not worked in IIS serve host
Can given to any rights issue? How to solve the issue ?
private void SendToPrinter()
{
ProcessStartInfo info = new ProcessStartInfo();
info.Verb = "print";
info.FileName = #"c:\output.pdf";
info.CreateNoWindow = true;
info.WindowStyle = ProcessWindowStyle.Hidden;
Process p = new Process();
p.StartInfo = info;
p.Start();
p.WaitForInputIdle();
System.Threading.Thread.Sleep(3000);
if (false == p.CloseMainWindow())
p.Kill();
}

It might be an authorization/security problem.
IIS (the server) runs in a context which doesn't have access to the shared printer.
Your local host has it cause it's running in your user's context.