| Event Id | 1904 |
| Source | MSExchangeOMA |
| Description | Unable to connect to the global catalog server. To fix this problem, verify that network connectivity exists between this server and the global catalog servers. Also, verify that the global catalog servers are working properly. |
| Event Information | According to Microsoft : CAUSE : This event indicates that the server in question is having a problem communicating with the global catalogs. SOLUTION : Check for network issues. Verify basic connectivity between the server and global catalogs. Also verify that the global catalogs are working properly. |
| Reference Links | Event ID: 1904 Of Source ID:MSExchangeOMA |
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