Assume that you have installed a cumulative update on an instance of Microsoft SQL Server 2014 that has a service pack installed. When you uninstall the cumulative update and the service pack, none of them are uninstalled correctly. But you don't receive any error messages about this.
The issue was first fixed in the following cumulative update of SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. We recommend that you download and install the latest cumulative updates for SQL Server:
Learn about the terminology that Microsoft uses to describe software updates.