这通常不是一个任务在用户上下文中运行的程序。通常，组策略集是域/计算机的管理员。从Vista开始，普通的suer默认情况下不能改变系统时间。

That's generally not a task of a program running in a user context. It is typically a Group Policy set be the administrator of the domain / computer. And from Vista onwards, a normal suer must not change the system time by default.