Sql-server – Out-of-Date MS SQL Server 2014 instance

You have installed a new instance of SQL Server, so you need to change the way you connect to that new instance.

Previously, you had a default instance, so connecting using any of these in the Server name: box would work fine:

localhost
.
127.0.0.1
<any_local_IP>
<your_machine_name>
<your_FQDN>

Now that you have installed a new instance of SQL Server, you need to reference that instance name as part of the connection string, so any of the above need to become the following:

localhost\MSSQLSERVER14
.\MSSQLSERVER14
127.0.0.1\MSSQLSERVER14
<any_local_IP>\MSSQLSERVER14
<your_machine_name>\MSSQLSERVER14
<your_FQDN>\MSSQLSERVER14

I have answer for this question from member of Microsoft Technet called Lydia Zhang:

...SSIS will inherit the patch level that your installation media contains, which has no impact on the patch level of your existing SQL Server 2014 failover cluster instance... https://social.technet.microsoft.com/Forums/en-US/83f5eef4-bf7a-439e-8e6c-a3124434b12d/post-installation-of-ssis-for-existing-mssql-instance-with-different-build-versions?forum=sqlsetupandupgrade

So my question is resolved.