Windows 2003 open local users and groups prompts no permission solution

after 360 anti-virus, 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 able to surf the Internet, speed google, finally solved: run “gpedit.msc” open group policy in user configuration /management template /windows components /Microsoft Management Console /restricted, licensed Below the Snap-in, see "Local Users and Groups", double-click and set it to Allow. In this directory, there are disk management, the management unit such as the device manager can be selected, and the management unit is limited by the policy. This error should be solved in this case.