Visual C++ filesize: createFile() returns invalid handle

I tired to get the file size in Visual studio C++. The first step getting the handle of the file is failing. I checked there is a file in that full path. Any idea why the handle is invalid here? I got the error code 6 which is how I know the handle is invalid.

            HANDLE hFile = CreateFile(fullPath.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
            LARGE_INTEGER size;
            if (!GetFileSizeEx(hFile, &size))
                size.QuadPart = 0;

            CloseHandle(hFile);