运行\regedit\找到HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC将RestrictToPermittedSnapins的值设置为0，如果MMC找不到可以这样：
直接将下面内容复制粘贴进入记事本，并保存为后缀名为.reg的文件，双击运行该.reg文件即可。
WindowsRegistryEditorVersion5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\GroupPolicyObjects\LocalUser\Software\Policies\Microsoft\MMC]
[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\GroupPolicyObjects\LocalUser\Software\Policies\Microsoft\MMC\{8FC0B734-A0E1-11D1-A7D3-0000F87571E3}]
"Restrict_Run"=dword:00000000
[HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC]
[-HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC\{8FC0B734-A0E1-11D1-A7D3-0000F87571E3}]
"Restrict_Run"=dword:00000000
[HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC]
"RestrictToPermittedSnapins"=dword:00000000
