A. If the Active Directory (AD) Schema Manager snap-in doesn't connect to the Operations Master when you attempt to view the schema's permissions, you may receive the following error message: "Could not connect to the current schema master server. The server may not be available, or you may have insufficient privileges to manage the schema." If you attempt to view or change the Operations Master, you may receive the following error message: "The server is currently offline."
To resolve this problem, first click the plus sign (+) to expand the hive, and then connect the snap-in to the Operations Master. After the hive has expanded, you can connect to the Operations Master.