You are getting this message because you have not enabled filestream on the sql server database instance.
To enable the filestream on the SQL Server database please follow the given steps:-
1)
Open Start Button -> All Programs -> SQL Server 2008/2005 -> Configuration Tools -> SQL Server Configuration Manager.
2)
Select the SQL Server services.
3)
On the right pane right-click the database instance and select properties. (In the attached screen shot I have two database instances install, SQLExpress and MSSQLServer. I
picked the later as Zentity is using the same database engine, MSSQLServer.)
4)
Click on the Filestream tab and set the settings as shown in the attached screen shot.
Apart from this there are few other configuration settings on SQL Server and IIS that need to be done before installing the Zentity. All these pre-requisites are mentioned in
the Zentity installation guide and the way to enable them. You can download this document from the forum discussion thread titled,
Download Zentity Installation Guide.
Let me know if you have any further query.
