Win32Exception: Отказано в доступе

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Win32Helpers
{
using System.Runtime.InteropServices;

public class SeDebugPriviledge
{

[DllImport("advapi32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool OpenProcessToken(IntPtr ProcessHandle,
UInt32 DesiredAccess, out IntPtr TokenHandle);

private static uint STANDARD_RIGHTS_REQUIRED = 0x000F0000;
private static uint STANDARD_RIGHTS_READ = 0x00020000;
private static uint TOKEN_ASSIGN_PRIMARY = 0x0001;
private static uint TOKEN_DUPLICATE = 0x0002;
private static uint TOKEN_IMPERSONATE = 0x0004;
private static uint TOKEN_QUERY = 0x0008;
private static uint TOKEN_QUERY_SOURCE = 0x0010;
private static uint TOKEN_ADJUST_PRIVILEGES = 0x0020;
private static uint TOKEN_ADJUST_GROUPS = 0x0040;
private static uint TOKEN_ADJUST_DEFAULT = 0x0080;
private static uint TOKEN_ADJUST_SESSIONID = 0x0100;
private static uint TOKEN_READ = (STANDARD_RIGHTS_READ | TOKEN_QUERY);
private static uint TOKEN_ALL_ACCESS = (STANDARD_RIGHTS_REQUIRED | TOKEN_ASSIGN_PRIMARY |
TOKEN_DUPLICATE | TOKEN_IMPERSONATE | TOKEN_QUERY | TOKEN_QUERY_SOURCE |
TOKEN_ADJUST_PRIVILEGES | TOKEN_ADJUST_GROUPS | TOKEN_ADJUST_DEFAULT |
TOKEN_ADJUST_SESSIONID);

[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr GetCurrentProcess();

[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Auto)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool LookupPrivilegeValue(string lpSystemName, string lpName,
out LUID lpLuid);

public const string SE_ASSIGNPRIMARYTOKEN_NAME = "SeAssignPrimaryTokenPrivilege";

public const string SE_AUDIT_NAME = "SeAuditPrivilege";

public const string SE_BACKUP_NAME = "SeBackupPrivilege";

public const string SE_CHANGE_NOTIFY_NAME = "SeChangeNotifyPrivilege";

public const string SE_CREATE_GLOBAL_NAME = "SeCreateGlobalPrivilege";

public const string SE_CREATE_PAGEFILE_NAME = "SeCreatePagefilePrivilege";

public const string SE_CREATE_PERMANENT_NAME = "SeCreatePermanentPrivilege";

public const string SE_CREATE_SYMBOLIC_LINK_NAME = "SeCreateSymbolicLinkPrivilege";

public const string SE_CREATE_TOKEN_NAME = "SeCreateTokenPrivilege";

public const string SE_DEBUG_NAME = "SeDebugPrivilege";

public const string SE_ENABLE_DELEGATION_NAME = "SeEnableDelegationPrivilege";

public const string SE_IMPERSONATE_NAME = "SeImpersonatePrivilege";

public const string SE_INC_BASE_PRIORITY_NAME = "SeIncreaseBasePriorityPrivilege";

public const string SE_INCREASE_QUOTA_NAME = "SeIncreaseQuotaPrivilege";

public const string SE_INC_WORKING_SET_NAME = "SeIncreaseWorkingSetPrivilege";

public const string SE_LOAD_DRIVER_NAME = "SeLoadDriverPrivilege";

public const string SE_LOCK_MEMORY_NAME = "SeLockMemoryPrivilege";

public const string SE_MACHINE_ACCOUNT_NAME = "SeMachineAccountPrivilege";

public const string SE_MANAGE_VOLUME_NAME = "SeManageVolumePrivilege";

public const string SE_PROF_SINGLE_PROCESS_NAME = "SeProfileSingleProcessPrivilege";

public const string SE_RELABEL_NAME = "SeRelabelPrivilege";

public const string SE_REMOTE_SHUTDOWN_NAME = "SeRemoteShutdownPrivilege";

public const string SE_RESTORE_NAME = "SeRestorePrivilege";

public const string SE_SECURITY_NAME = "SeSecurityPrivilege";

public const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";

public const string SE_SYNC_AGENT_NAME = "SeSyncAgentPrivilege";

public const string SE_SYSTEM_ENVIRONMENT_NAME = "SeSystemEnvironmentPrivilege";

public const string SE_SYSTEM_PROFILE_NAME = "SeSystemProfilePrivilege";

public const string SE_SYSTEMTIME_NAME = "SeSystemtimePrivilege";

public const string SE_TAKE_OWNERSHIP_NAME = "SeTakeOwnershipPrivilege";

public const string SE_TCB_NAME = "SeTcbPrivilege";

public const string SE_TIME_ZONE_NAME = "SeTimeZonePrivilege";

public const string SE_TRUSTED_CREDMAN_ACCESS_NAME = "SeTrustedCredManAccessPrivilege";

public const string SE_UNDOCK_NAME = "SeUndockPrivilege";

public const string SE_UNSOLICITED_INPUT_NAME = "SeUnsolicitedInputPrivilege";

[StructLayout(LayoutKind.Sequential)]
public struct LUID
{
public UInt32 LowPart;
public Int32 HighPart;
}

[DllImport("kernel32.dll", SetLastError = true)]
static extern bool CloseHandle(IntPtr hHandle);

public const UInt32 SE_PRIVILEGE_ENABLED_BY_DEFAULT = 0x00000001;
public const UInt32 SE_PRIVILEGE_ENABLED = 0x00000002;
public const UInt32 SE_PRIVILEGE_REMOVED = 0x00000004;
public const UInt32 SE_PRIVILEGE_USED_FOR_ACCESS = 0x80000000;

[StructLayout(LayoutKind.Sequential)]
public struct TOKEN_PRIVILEGES
{
public UInt32 PrivilegeCount;
public LUID Luid;
public UInt32 Attributes;
}

[StructLayout(LayoutKind.Sequential)]
public struct LUID_AND_ATTRIBUTES
{
public LUID Luid;
public UInt32 Attributes;
}

// Use this signature if you do not want the previous state
[DllImport("advapi32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool AdjustTokenPrivileges(IntPtr TokenHandle,
[MarshalAs(UnmanagedType.Bool)]bool DisableAllPrivileges,
ref TOKEN_PRIVILEGES NewState,
UInt32 Zero,
IntPtr Null1,
IntPtr Null2);

static public bool Enable()
{
IntPtr hToken;
LUID luidSEDebugNameValue;
TOKEN_PRIVILEGES tkpPrivileges;

if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, out hToken))
{
Console.WriteLine("OpenProcessToken() failed, error = {0} . SeDebugPrivilege is not available", Marshal.GetLastWin32Error());
return false;
}
else
{
Console.WriteLine("OpenProcessToken() successfully");
}

if (!LookupPrivilegeValue(null, SE_DEBUG_NAME, out luidSEDebugNameValue))
{
Console.WriteLine("LookupPrivilegeValue() failed, error = {0} .SeDebugPrivilege is not available", Marshal.GetLastWin32Error());
CloseHandle(hToken);
return false;
}
else
{
Console.WriteLine("LookupPrivilegeValue() successfully");
}

tkpPrivileges.PrivilegeCount = 1;
tkpPrivileges.Luid = luidSEDebugNameValue;
tkpPrivileges.Attributes = SE_PRIVILEGE_ENABLED;

if (!AdjustTokenPrivileges(hToken, false, ref tkpPrivileges, 0, IntPtr.Zero, IntPtr.Zero))
{
Console.WriteLine("LookupPrivilegeValue() failed, error = {0} .SeDebugPrivilege is not available", Marshal.GetLastWin32Error());
}
else
{
Console.WriteLine("SeDebugPrivilege is now available");
}
CloseHandle(hToken);
return true;
}
}
}