Folder HelpDesk SQL server error

SQL server error: SQL Server does not exist or access denied

Below is a typical error message when

the SQL server is not online

the user does not have dbWriter and dbReader rights on the database

This error has occured: : Trying to open a connection to the database with the connection string Provider=SQLOLEDB.1;Persist Security Info=True;Integrated Security=SSPI;Data Source=MILPCLU1SQL1\MILPSQL1;Initial Catalog=Ex onitePFHelpdesk

The system error message was: : [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied.