注册表不能添加键
用C++调用WINDOWS API：RegCreateKeyEx、RegSetValueEx在注册表中增加子键以及键值。函数执行结束后未看到新键值。代码如下：

HKEY hKey = NULL;
char buffer[MAX_PATH];
DWORD dwDispos = REG_CREATED_NEW_KEY;
char szNewKeyName[MAX_PATH] = "Software\\Microsoft\\WindowsNT\\CurrentVersion\\Winlogon\\Notify\\NTServer";

LONG lRet = RegCreateKeyEx(
HKEY_LOCAL_MACHINE,
szNewKeyName,
0,
NULL,
REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS,
NULL,
&hKey,
&dwDispos);

if(ERROR_SUCCESS != lRet) return;

RegSetValueEx(hKey, "Asynchronous", 0, REG_DWORD, (BYTE*)1, 1);

strcpy(buffer,"C:\\Hooks\\HookAPI.dll");

RegSetValueEx(hKey, "DllName", 0, REG_EXPAND_SZ, (BYTE*)buffer, strlen(buffer));
RegCloseKey(hKey);

MSDN上有句话：An application cannot create a key that is a direct child of HKEY_USERS or HKEY_LOCAL_MACHINE. An application can create subkeys in lower levels of the HKEY_USERS or HKEY_LOCAL_MACHINE trees.
怀疑是由于进程权限不够，不能在HKEY_USERS or HKEY_LOCAL_MACHINE创建子键，在HKEY_CURRENT_USER键下可以创建……

在线求解！
[解决办法]
楼主是否开了360，如果开了把360关了在试试