Improvement
The Installation Wizard for Microsoft SQL Server 2014 contains links to download tools such as SQL Server Management Studio (SSMS), SQL Server Data Tools (SSDT), and so on. The download links currently use an "HTTP" URL, which is not secure. This update replaces the "HTTP" URL with an "HTTPS" URL in all links to improve security.
Resolution
Service Pack for SQL Server 2014:
This update is included in the following service pack for SQL Server:
Service packs are cumulative. Each new service pack contains all the fixes that are in previous service packs, together with any new fixes. Our recommendation is to apply the latest service pack and the latest cumulative update for that service pack. You do not have to install a previous service pack before you install the latest service pack. Use Table 1 in the following article for finding more information about the latest service pack and latest cumulative update.
How to determine the version, edition and update level of SQL Server and its components
References
Learn about the terminology that Microsoft uses to describe software updates.