GPO禁用隐藏已知文件types的扩展名应用但不起作用

域控制器是Windows server 2012 ,目标计算机是Windows 7

我设置了策略来控制在User configuration\Prefences\Control panel settings\Folder options隐藏文件types扩展名。

政策按预期得到应用。 当我运行Gpresult我看到这些行:

 Control Panel Settings Folder Options Folder Options (Windows Vista) The following settings have applied to this object. Within this category, settings nearest the top of the report are the prevailing settings when resolving conflicts. Folder Options (At least Windows Vista) Winning GPO GPO1 Result: Success General Properties Hide extensions for known file types Disabled 

尽pipe如此,如果启用了隐藏function,它仍然保持这种状态。 如果它被禁用,它仍然可以用基本的用户权限手动启用。

看来这个环境什么都不做。 什么可能导致这个?