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Impersonate not working from command line

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I am developing a simple move file utility to move files from one domain to
another in the same internal network. My program runs fine when it reads the
parameters (user, domain, password etc) from a XML file to move files across
the internal network to a different domain. This is a console application
that should have the option of specifying the parameters at the commandline
prompt. When I specify the parameters at cmd line, it gives me a "Access
denied" (access to the file at the destination) error message.

I debugged the code in both the above cases (1-reading params from Xml file
and 2-reading params from commandline). The values of username, password,
destination domain, source file and destination file were the same in both
the cases. But I am getting the Access denied error only when I do this from
cmd line.

Do you know how I can fix this? Any help in this regard will be appreciated.


I am using the following Impersonator class to login as the admin of the
destination domain -

public class Impersonator
public WindowsImpersonationContext impersonationContext;

public static extern int LogonUser(String lpszUsername, String lpszDomain,
String lpszPassword,
int dwLogonType, int dwLogonProvider, ref IntPtr phToken);

public extern static bool CloseHandle(IntPtr hToken);

public bool Impersonate(string userName, string domain, string password)
WindowsIdentity tempWindowsIdentity;
IntPtr token = IntPtr.Zero;
IntPtr tokenDuplicate = IntPtr.Zero;
// request default security provider a logon token with
// token returned is impersonation token, no need to duplicate
if(LogonUser(userName, domain, password, 9, 0, ref token) != 0)
tempWindowsIdentity = new WindowsIdentity(token);
impersonationContext = tempWindowsIdentity.Impersonate();
// close impersonation token, no longer needed
if (impersonationContext != null)
return true;
return false; // Failed to impersonate.
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