SOLVED: Windows Installer keeps running infinitely after installing SQL Server 2012 SP1

The Problem

After installing SQL Server 2012 Service Pack 1, Windows Installer is running constantly.

The Fix

Download and apply SQL Server 2012 Service Pack 1 Cumulative Update 2.

More information

• SQL 2012: msiexec.exe running constantly after SP1 install
• Microsoft Connect: msiexec.exe processes keep running after installation of SQL Server 2012 SP1 

--Neno