I have done the most stupid thing a network administrator can do! I have disabled the ability to access MMC's through the Default domain policy and now none of my MMC snapins work. I forgot that the Domain policy also included the Administrator account and the domain controller. Stupid stupid stupid!. I am using Small business server 2000 so I am able to get into Users and computers. When I choose any of the Properties options on the containers under users and computers all I see is the General tab. Is there any way of undoing the changes to the default domain policy in the registry or anywhere else for that matter.