SQLException: Network error IOException:Connection refused: connect - sql

I am new to Talend application, while I am trying to connect to SQL Server database, I'm getting the error shown below. I googled it for resolve this issue few people were commenting as need to be start the SQL Server services in services.msc as they suggested I have enabled the services and but facing same issue so far.
Please kindly help me on this issue and find the attached screen shot which are facing an issue.
Services error of SQL error 2:
Talend error:

There is two option to connect to SQL Server,
1) Mix Mode
2) Window Authentication
Use Microsoft SQL Management Studio and try connect into the database.

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I am unable to connect to Azure SQL and access my database from Report builder.
Getting following error:
I had enabled the access in Azure portal for the above IP mentioned. Still getting the error.
I was able to repro successfully, Make sure you specify the Database Name explicitly and try again.

Unable To Connect Sql Server from Database from Power BI Desktop

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We encounter an error while trying to connect
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I tried to resolve by reinstalling .Net framework -and restart. But Could no resolve the issues
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SQL server & Visual Studio

I need help with SQL server in visual studio. I can't seem to connect my visual studio with internal SQL server. I had created a database with visual studio earlier and it was working fine but now i'm getting an error saying:
The attempt to attach to the database failed with the following
information: A network-related or instance-specific error occurred
while establishing a connection to SQL Server. The server was not
found or was not accessible. Verify that the instance name is correct
and that SQL Server is configured to allow remote connections.
(provider: SQL Network Interfaces, error: 50 - Local Database Runtime
error occurred. Cannot create an automatic instance. See the Windows
Application event log for error details.
I have tried to create a new database file in a new project but then i get the error:
A network related or instance specific error occurred while
establishing a connection. The server was not found or was not
accessible. (Provider:Named Pipes Provider, error:40- could not open a
connection to SQL server.
I have tried different things but can't seem to get the hang of the problem. I reinstalled visual studio too but that didn't work either. what can i do to get rid of this error and get my database back online?
If you are running Visual Studio on your local machine, you have not any problem with firewalls and enabling of TCP/IP.
Try this four solutions may fix your problem:
SQL Server Express LocalDB add-on, get it from this link.
Make sure that your SQL service is running.
Use SQL Server Authentication.
Make sure you have typed .\sqlexpress in Server name in Add Connection window. You should use a backslash \ as the separator, not a forward slash.

The server was not found or was not accessible - Server was lost for 6 hours

First off, I only have a very basic understanding of SQL. I can create tables etc. but configuration is beyond me. I am running my web site with MVC3 ASP.Net on a windows 2008 server using SQL Express.
Everything works fine, my connection strings are correct, I can use the website and it reads and writes to the dB, I can also view the dB with management studio on the server.
Today I got the following error:
A network-related or instance-specific error occurred while
establishing a connection to SQL Server. The server was not found or
was not accessible. Verify that the instance name is correct and that
SQL Server is configured to allow remote connections. (provider: SQL
Network Interfaces, error: 26 - Error Locating Server/Instance
Specified)
When I tried to log on to the database in management studio on the server I get a similar error. the only fix I have found is for a server restart. The database was down for 6 hours before I noticed which is not good for a start up website.
Has any one seen this issue before? Is this an express issue? Any help or advice would be great.
Troubleshoot as you would any network error. Start with the server's event logs.
As for notification of downtime, there are a lot of web services that will monitor your web site and email or send you an SMS message if it's not responding. Two that I've used are uptimerobot.com and basicstate.com. There are dozens of others.
You could also rewrite your ASP.Net app to email or text you when certain kinds of errors happen.

Error 26 on SQL Server 2008

I have prepared a program with Visual Basic 2010 and I am using a SQL Server 2008 database. (service based database) it works properly. But sometimes (when I don't use computer for a period like 2 hours) I try to start my program on VB (F5), it waits, and then gives this error:
A network-related or instance-specific error occured while
establishing a connection to SQL Server. The server was not found or
is not accesible. Verify that the instance name is correct and that
SQL Server name is configured to allow remote connections. (provider:
SQL Network Interfaces, error: 26 - Error Locating Server/Instance
Specified.)
I have googled it, but nothing helps. I'm afraid this error will be a problem when the user uses the program. How might I solve this?
Probably the network connection turn off after some time. Check System Operating power setting's option
The same issue I faced and got resolved by trying this - in run type services.msc:
the services window will pop up
in that SQL Server(SQLEXPRESS) start this service.
make sure SQL Browser service is running.