Windows 2003 open local users and groups prompts no permissions

After 360 antivirus, many settings of windows server 2003 are inexplicably modified, this time open "local users and groups", prompts no permission to manage this unit Sadly reminded, but fortunately, I can get online, speed google, and finally solved:

Run“gpedit.msc”Open Group Policy

in User Configuration/Administrative Template/Windows Under the Components/Microsoft Management Console/Restricted, Licensed snap-in, see “Local Users and Groups”, double-click and set it to Allow.

And there are disk management in this directory, the management unit such as device manager can choose, the management unit is limited by the policy. This error can be solved in this.