| Event Id | 1178 |
| Source | Active Directory |
| Description | Language identifier %1 is not installed on this Windows Domain Controller. Localized indices will not be created for it. Make sure that you configure the appropriate language for this identifier using the Control Panel. |
| Event Information | The language identifier specified in the message is not valid on this domain controller. Localized language indices will not be created for this language identifier. Verify that the registry key that specifies this language identifier is configured correctly, and verify that the language support for this language identifier is installed. |
| Reference Links | Monitoring AD Changes: Article |
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