Question

I have a website in which I create a file and save it in a remote share folder. I have a account which have write access to that share folder. So I impersonate that account while saving the file in that path. This logic works when I run the application from my visual studio locally in my machine. When I deploy the code in the development server, It does’t work. I get the following error.

“Logon failure: the user has not been granted the requested logon type at this computer”

can someone help.

Here is the impersonation code from codeproject

using System;
using System.Security.Principal;
using System.Runtime.InteropServices;
using System.ComponentModel;

public class Impersonator :
    IDisposable

{

public Impersonator(
    string userName,
    string domainName,
    string password)
{
    ImpersonateValidUser(userName, domainName, password);
}

// ------------------------------------------------------------------
#endregion

#region IDisposable member.
// ------------------------------------------------------------------

public void Dispose()
{
    UndoImpersonation();
}

// ------------------------------------------------------------------
#endregion

#region P/Invoke.
// ------------------------------------------------------------------

[DllImport("advapi32.dll", SetLastError = true)]
private static extern int LogonUser(
    string lpszUserName,
    string lpszDomain,
    string lpszPassword,
    int dwLogonType,
    int dwLogonProvider,
    ref IntPtr phToken);

[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern int DuplicateToken(
    IntPtr hToken,
    int impersonationLevel,
    ref IntPtr hNewToken);

[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool RevertToSelf();

[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern bool CloseHandle(
    IntPtr handle);

private const int LOGON32_LOGON_INTERACTIVE = 2;
private const int LOGON32_PROVIDER_DEFAULT = 0;

// ------------------------------------------------------------------
#endregion

#region Private member.
// ------------------------------------------------------------------

/// <summary>
/// Does the actual impersonation.
/// </summary>
/// <param name="userName">The name of the user to act as.</param>
/// <param name="domainName">The domain name of the user to act as.</param>
/// <param name="password">The password of the user to act as.</param>
private void ImpersonateValidUser(
    string userName,
    string domain,
    string password)
{
    WindowsIdentity tempWindowsIdentity = null;
    IntPtr token = IntPtr.Zero;
    IntPtr tokenDuplicate = IntPtr.Zero;

    try
    {
        if (RevertToSelf())
        {
            if (LogonUser(
                userName,
                domain,
                password,
                LOGON32_LOGON_INTERACTIVE,
                LOGON32_PROVIDER_DEFAULT,
                ref token) != 0)
            {
                if (DuplicateToken(token, 2, ref tokenDuplicate) != 0)
                {
                    tempWindowsIdentity = new WindowsIdentity(tokenDuplicate);
                    impersonationContext = tempWindowsIdentity.Impersonate();
                }
                else
                {
                    throw new Win32Exception(Marshal.GetLastWin32Error());
                }
            }
            else
            {
                throw new Win32Exception(Marshal.GetLastWin32Error());
            }
        }
        else
        {
            throw new Win32Exception(Marshal.GetLastWin32Error());
        }
    }
    finally
    {
        if (token != IntPtr.Zero)
        {
            CloseHandle(token);
        }
        if (tokenDuplicate != IntPtr.Zero)
        {
            CloseHandle(tokenDuplicate);
        }
    }
}

/// <summary>
/// Reverts the impersonation.
/// </summary>
private void UndoImpersonation()
{
    if (impersonationContext != null)
    {
        impersonationContext.Undo();
    }
}

private WindowsImpersonationContext impersonationContext = null;

// ------------------------------------------------------------------
#endregion

}

Answer 1

I found the answer myself. I changed the logon type to 8 and it worked.. Thanks everyone