用GPMC编辑修改某个group policy后，并不会马上启作用，原因是修改值是在background进行更新的。一般来讲对于controler是5分钟，到机器上是90分钟。可以修改refresh interval,但是不建议。修改方法官方是http://support.microsoft.com/kb/203607
- Log on to the Windows 2000-based computer as an administrator.
- Click Start, click Run, type gpedit.msc, and then click OK.
- Double-click Computer Configuration, and then double-click Administrative Templates.
- Double-click System, and then double-click Group Policy to display the group policies.
- Depending on the type of computer from which you making this change, double-click Group Policy refresh interval for computers to make this change for workstations or for member servers. Or, double-click Group Policy refresh interval for domain controllers.
- Click Enable in Group Policy refresh interval for computers so that you can modify the refresh and offset intervals settings on the Policy tab. Optionally, the administrator can enable Disable background refresh of group policy.
- Click OK, and then close the Computer Management snap-in.
参考
http://www.activedir.org/Articles/tabid/54/articleType/ArticleView/articleId/24/Group-Policy-FAQ.aspx