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DC holding GC role does not advertise as GC

Title: DC holding GC role does not advertise as GC

Description:

The Domain controller diagnostic Advertising test failed with error "DC holding GC role does not advertise as GC". A global catalog must replicate inbound copies of all objects from all domain partitions in the forest before the global catalog can advertise the global catalog role.


A global catalog must replicate inbound copies of all objects from all domain partitions in the forest before the global catalog can advertise the global catalog role.

When a domain controller is selected to host the global catalog, the KCC on the domain controller that is being promoted uses its discretion to build connection objects from source domain controllers that host the required partitions. These source domain controllers may consist of existing global catalogs in the forest or domain controllers that host writable copies of every domain partition that resides in its forest. The contents of each domain partition are then inbound replicated from source domain controllers that are designated by the KCC. The contents are replicated to the newly promoted global catalog over existing or newly created connection links.

Global catalog promotion may fail if one of the following conditions is true:


1.    The configuration partition on one or more domain controllers contains a cross-reference object to a stale or orphaned domain, but no domain controllers for that domain are located in the forest.
2.    Metadata for a source domain controller that is designated by the KCC is located in the configuration partition of one or more domain controllers but does not represent a domain controller currently present in the forest.
3.    The source domain controller that is selected by the KCC on the global catalog that is being promoted is offline.
4.    The source domain controller that was selected by the KCC on the global catalog that is being promoted is inaccessible over the network. This domain controller is inaccessible because there is no network connectivity or partial network connectivity. The following are examples of network connectivity issues:
o    Ports that are blocked
o    IP addresses that are filtered
o    Networks that are not fully routed but that have the bridge-all-site-links option enabled

5.    Source domain global catalogs are constrained from acting as bridgeheads because non-global catalog domain controllers have incorrectly been selected as preferred bridgeheads by administrators.
6.    The global catalog that is being promoted cannot build a connection link from the selected source domain controller because of the error status that is logged in one of the events that are listed in the Summary section.

An orphaned domain will prevent the domain controller from finishing the replication. The domain controller cannot advertise itself as a global catalog server until replication is completed. There are several issues that could lead to an orphaned domain:
1.    Active Directory was removed from all the domain controllers of a domain, but the domain partition cross-reference object still remains.
2.    Active Directory was removed from a domain controller, and the directory partition of the domain controller was removed. The domain controller was then re-created before replication was completed. These events caused lingering phantoms that a cross-reference object incorrectly references.
3.    The domain-naming update for the domain has not reached the domain controller that is experiencing the problem. Or, the domain-naming update for a domain that is newly promoted may not have reached any domain controllers outside that domain.

This issue would be a temporary problem.
User Action:

To resolve this problem, first identify the root cause of the replication issue, and resolve that problem.

Determine whether the replication issue is caused by one of the following conditions:

•    A replication delay
•    An orphaned domain that is located in the forest environment
•    An inability to build the connection link
•    An inability to replicate over the connection agreement

Keyword: advertising test failed

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