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.

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");

     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

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

    Public Const CO_E_FAILEDTOOPENTHREADTOKEN As Integer = CInt(&H80010125UI)

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