We tried applying SQL Server 2012 SP4 + Hot fix patch on 2012 SP3 SQL Server. But it didnt allow us to complete the wizard. Error came up in the select features as "There are no sql server instances or shared features that can be updated on this computer".
SQL Discovery report where SP3 is showing.
In windows registry & Installed updates, its showing the SP4 updates under SQL Server VSS writer & SQL Server Browser. Where am i missing here ?