SQL Server encountered error 0x80070422 while communicating with full-text filter daemon host (FDHost) process. Make sure that the FDHost process is running. To re-start the FDHost process, run the sp_fulltext_service 'restart_all_fdhosts' command or restart the SQL Server instance

When we run a very simple full text search query in server for examples:

SELECT *

FROM [ExactHelp].[dbo].[tblActiveProcess]

WHERE CONTAINS(vcProcessName,'a')

We may get error message like:

SQL Server encountered error 0x80070422 while communicating with full-text filter daemon host (FDHost) process. Make sure that the FDHost process is running. To re-start the FDHost process, run the sp_fulltext_service 'restart_all_fdhosts' command or restart the SQL Server instance.

Cause: Your full-text filter daemon service is not running.

Solution: We have to start the service "Sql Full-text filter daemon Launcher".

Step 1: In run type: services.msc and press enter.

Step 2: Right click on "Sql Full-text filter daemon Launcher" and click on properties.

Start sql server full text search daemon Launcher

Step 3: If start type is disable then choose either automatic or manual then click on apply then start the services then click on OK button.

Enable and start services FULL TEXT SEARCH