The server could not be found or was unavailable. Ensure the accuracy of the instance name and that SQL Server is set to enable remote connections.

(TCP Provider, error: 0 - No connection could be established since the target computer actively refused it.)
(Error: 10061, Microsoft SQL Server)

This issue occurs because the Windows firewall closes the TCP/IP connection to the SQL server: Allowing SQL Server Access to configure in the Windows Firewall.

1: Fix Microsoft SQL Server Error 10061?

Firstly, We have to Make sure the TCP/IP Protocol is active and up and running. We may access the SQL server and configuration manager by heading to All applications -> Microsoft SQL server -> Configuration Tools.

Choose the client protocols (based on the operating system we are using, 32-bit or 64-bit). Make sure TCP/IP Protocol is active on the right hand.

While the computer displays the “SQL Server Issue 10061 Connection Denied” error message, we can try the following troubleshooting methods:

No connection with TCP error. HTML 10061: The connection could not be scheduled because the destination machine refused to accept it.

We must enable an exception, generally the port, in the Windows firewall application. We can disable the firewall software.

After the shutdown, the software may resume normal operation. If this is the case, there is a strong sign that the error is the cause of a firewall.

So, now that we’ve identified that the problem is with the firewall, we can enable it. Turn on the firewall and make a minor port exception.

Keep in mind that this error can be caused by a variety of factors other than the Firewall.

Error code 10061: Unable to connect to TCP: The target has obviously rejected the machine, thus we are unable to connect.

One of the alternatives is to configure an exception for the port in the new firewall window. The exact program might work properly after disabling it.

This might point out the fact that the firewall was indeed the main cause for triggering the error. So in this case we have to quickly enable the firewall and put the port as an exception.

2: Fix error 10061 connection refused?

Here are some troubleshooting actions we can do to avoid or resolve the 10061 connection rejected SQL server error.

Examine the Enterprise Console configuration. From the Windows Start menu, launch some PRTG Enterprise Console programs. Step Examine the PRTG administrative tool’s settings. Compare the settings. After that, put the adjustments into action.

TCP error number 10061: Unable to bind Because the specified target computer actively refused to connect, the connection could not be created.

Check to see if TCP/IP is enabled. Navigate to All Programs -> Microsoft SQL Server 2008 -> Configuration Tools -> SQL Server Configuration Manager and launch it.

Select Client Networks from the menu on the left (depending on the 32- or 64-bit operating program). Check the right side to see if TCP/IP is enabled.f.

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Conclusion

To conclude we have learned more about the error 10061 connection refused SQL server and the specific triggers that causes the error to occur. With the support of our MSSQL support services, we have learned all of the possible triggers and effective solutions to deal with the error in a few simple steps and quickly.