就在你给出的链接的那页，第4段：
Prefixing the file mapping object names with ＂Global\＂ allows processes to communicate with each other even if they are in different terminal server sessions. This requires that the first process must have the SeCreateGlobalPrivilege privilege.
说明需要另获权限才行。我对Windows的安全机制不太了解，不知道解决方案，但问题已经很明显了
