The domain controller on which the schema is to be modified is running Windows 2000 Server. On Windows 2000-based domain ...

The domain controller on which the schema is to be modified is running Windows 2000 Server. On Windows 2000-based domain controllers, Active Directory schema modification is disabled by default. If the schema update for end-user recovery fails, you may need to enable schema modification on your domain controller. For instructions, see the Microsoft Help and Support article "Schema Updates Require Write Access to Schema in Active Directory" (http://go.microsoft.com/fwlink/?LinkId=33664).