An update is available that improves Microsoft SQL Server performance by restricting which Key Distribution Center (KDC) can be contacted in geographically large networks.
This update is included in the following update for SQL Server:
About SQL Server builds
Each new build for SQL Server contains all the hotfixes and security fixes that were in the previous build. We recommend that you install the latest build for your version of SQL Server:
Learn about the standard terminology Microsoft uses to describe software updates.