Process.Start() impersonation problem

Question

Trying to start process with another access token, without success, it runs as the non-impersonated user.

using (WindowsIdentity identity = new WindowsIdentity(token))
using (identity.Impersonate())
{
    Process.Start("blabla.txt");
}

How to make this work properly?

Answer 1

You need to set the ProcessStartInfo.UserName and Password properties. With UseShellExecute set to false. If you only have a token then pinvoke CreateProcessAsUser().

Answer 2

Try this example from http://msdn.microsoft.com/en-us/library/w070t6ka.aspx

private static void ImpersonateIdentity(IntPtr logonToken)
{
    // Retrieve the Windows identity using the specified token.
    WindowsIdentity windowsIdentity = new WindowsIdentity(logonToken);

    // Create a WindowsImpersonationContext object by impersonating the
    // Windows identity.
    WindowsImpersonationContext impersonationContext =
        windowsIdentity.Impersonate();

    Console.WriteLine("Name of the identity after impersonation: "
        + WindowsIdentity.GetCurrent().Name + ".");

    //Start your process here
    Process.Start("blabla.txt");

    Console.WriteLine(windowsIdentity.ImpersonationLevel);
    // Stop impersonating the user.
    impersonationContext.Undo();

    // Check the identity name.
    Console.Write("Name of the identity after performing an Undo on the");
    Console.WriteLine(" impersonation: " +
        WindowsIdentity.GetCurrent().Name);
}

You can also use CreateProcessAsUser windows function.

http://www.pinvoke.net/default.aspx/advapi32/createprocessasuser.html