Global catalog verification

Applies To: Windows Server 2008

Domain controllers on a network must contact global catalog servers to perform certain functions. For example, if an administrator adds a user from another domain in the forest to a domain local group in the local domain, a global catalog server is used to obtain the appropriate information to be added for the user. If the local domain controller is not a global catalog server, it locates another domain controller that is hosting the global catalog to obtain the appropriate information.


Event ID Source Message



Unable to establish connection with global catalog. (Internal DSID %1).

Global Catalog Server

Active Directory