public const int CO_E_FAILEDTOOPENTHREADTOKEN = (int)(0x80010125 - 0x100000000);

static extern bool OpenThreadToken(

Declare Function OpenThreadToken Lib "advapi32.dll" (

    private static extern bool OpenThreadToken(IntPtr ThreadHandle,

    if (!OpenThreadToken(GetCurrentThread(), TOKEN_READ | TOKEN_IMPERSONATE, true, out hToken))

        System.Diagnostics.Trace.WriteLine("Unexpected error 0x" + dw.ToString("x4") + " on OpenThreadToken", "Impersonation");

    public const int CO_E_FAILEDTOOPENTHREADTOKEN = unchecked((int)0x80010125);

    Public Const CO_E_FAILEDTOOPENTHREADTOKEN As Integer = CInt(&H80010125UI)

     static extern IntPtr OpenThread(uint dwDesiredAccess, bool bInheritHandle,

     IntPtr hThread = OpenThread(GET_CONTEXT, false, threadId);

static extern Microsoft.Win32.SafeHandles.SafeAccessTokenHandle OpenThread(

static extern IntPtr OpenThread(ThreadAccess dwDesiredAccess, bool bInheritHandle,

           OpenThread(

          SuspendThread(pOpenThread);

           IntPtr threadHandle = OpenThread(THREADACCESS_SUSPEND_RESUME, false, (uint)thd.Id); // Open thread with required permissions

           if (threadHandle == IntPtr.Zero) // If thread pointer is zero, means that the 'OpenThread' function has failed

in Token for the user, which is returned by the LogonUser, CreateRestrictedToken, DuplicateToken, OpenProcessToken, or OpenThreadToken function. The token must have TOKEN_QUERY and TOKEN_IMPERSONATE and TOKEN_DUPLICATE access. For more information, see Access Rights for Access-Token Objects.