You cannot promote a Microsoft Windows 2000-based domain controller to a global catalog server. When you try to assign the role of global catalog to the server by clicking to select the Global Catalog
check box, events that are similar to the following may be logged repetitively in the Directory Services log in Event Viewer:
Informational events that are similar to the following are logged every 30 minutes:
A Warning event that is similar to the following is logged every 15 minutes:
- The following Error event is logged every hour:
Event ID: 1126
Event Source: NTDS General
Event type: Informational
Description: Unable to establish connection with global catalog
This problem may occur if no domain controllers are available for a particular domain. The problem occurs because of Active Directory directory service replication issues.
To resolve this problem, you must investigate and resolve the Active Directory replication issues. You can use the information in the error messages to help troubleshoot the problem.
For example, you may be able to use event ID 1559 to identify the domain partition that cannot replicate.
Additionally, you may be able to use event ID 1265 to determine the cause of the replication failure for the same domain partition.
For additional information about troubleshooting active directory connector replication issues, click the following article numbers to view the articles in the Microsoft Knowledge Base:
Troubleshooting Active Directory connector replication issues
Using Repadmin.exe to troubleshoot Active Directory replication
If you have to, follow the steps in Microsoft Knowledge Base article 230306 to permanently remove the identified domain from the forest.
How to remove orphaned domains from Active Directory
After you promote the domain controller to a global catalog server, and the account and the schema information is replicated to the new global catalog server, event ID 1119 may be logged in the Directory Services log on the domain controller. The event description states that the computer is now advertising itself as a global catalog server.
To confirm that the domain naming master is a global catalog server, follow these steps:
- Click Start, click Run, type cmd, and then click OK.
- Type nltest /dsgetdc:Domain_name /server:Server_Name, and then press ENTER.
- Verify that the server is advertising the "GC" flag. For example, when you type the command, you will receive a message that is similar to the following if the GC flag is present:
Address: \\IP Address
Dom Guid: 47bc7d87-309e-4a2a-bac3-c9866a66bab8
Dom Name: Domain_name
Forest Name: Domain_name.com
Dc Site Name: Default-First-Site-Name
Our Site Name: Default-First-Site-Name
Flags: PDC GC DS LDAP KDC TIMESERV WRITABLE DNS_FOREST CLOSE_SITE
The command completed successfully
The nltest tool is included with the Microsoft Windows 2000 Support Tools.
To install the Windows 2000 Support Tools, open the Support\Tools folder on your Windows 2000 CD-ROM, and then run the Setup program. You must log on as a member of the Administrators group to install these tools.