FILESTREAM feature is disabled

Restore database (or) SQL Server setup fails in script upgrade mode with below error
Msg 5591, Level 16, State 4, Line 2
FILESTREAM feature is disabled.
Msg 3013, Level 16, State 1, Line 2
RESTORE DATABASE is terminating abnormally.

Follow the steps in and enable File stream, then restore the database.

If the upgrade for SQL Server is failing with error “ESTREAM feature is disabled” then enable file stream in configuration manager by following above article and start SQL Server by following steps mentioned in

 SQL Server2008/SQL Server2012: Script level upgrade for database ‘master’ failed  and run below statement to change file stream access level

sp_configure filestream_access_level, 2
RECONFIGURE with override

After you executed the above statement start the SQL Server normally.