The local domain controller is both a global catalog server and holder of the infrastructure operations master role. These two roles are not compatible.
Sample Event:
The local domain controller is both a global catalog and the infrastructure operations master. These two roles are not compatible.
If another domain controller exists in the domain, it should be made the infrastructure operations master. The following domain controller is a good candidate for this role.
Domain controller: %1
If all domain controllers in this domain are global catalogs, then there are no infrastructure update tasks to complete, and this message might be ignored.
If another domain controller exists in the domain, transfer the infrastructure operations master role to this domain controller. If all domain controllers in this domain are global catalogs, there are no infrastructure update tasks to complete, and this message may be ignored.
For more information, see:
Microsoft Help and Support for Microsoft Windows Server 2008 and above
Microsoft Knowledge Base