Are you running this proc using the sa account or an account in the system
administrators role?
This problem can be caused by changing the SQL Server service account
through the services applet in control panel as opposed to through right
clicking on SQL Server in Enterprise Manager, selecting properties, and
changing it in the security tab.

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Hilary Cotter
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> Server: Msg 7635, Level 16, State 1, Procedure sp_fulltext_database, Line
> 46
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>
> How to enable administration of ms search?