ca. line +-2590 in std.file.d

        bool stepIn(string directory)
        {
           string search_pattern = buildPath(directory, "*.*");
           WIN32_FIND_DATAW findinfo;
-->           HANDLE h = FindFirstFileW(toUTF16z(search_pattern), &findinfo);
-->           cenforce(h != INVALID_HANDLE_VALUE, directory);
           ........
       }

The cenforce() throws, when the folder "System Volume Information" is handled.
But this folder results in an INVALID HANDLE VALUE.