Exchange 2010 Error:Copy On This Server Experienced A Corrupted Search Catalog

If you see the error above in the event viewer it means that you need to re-sync your DAG DB search Catalog.

If you don’t fix the issue you DAG DB will not fail over to the passive server.

To fix the issue Open EMS -> and run the following cmdlet against the server that gives the error:

Update-MailboxDatabaseCopy “DAGDB1\EXCSERVER1” -CatalogOnly