The servicing stack includes the files and resources that are required to service a Windows image. This includes the Package Manager executable, the required servicing libraries, and other resources. The servicing stack is included in all Windows installations. The update fixes some issues.
On systems other than Windows 8.1 or Windows Server 2012 R2, this package installs successfully, but does nothing.
This update is required to install Visual Studio 2015 on Windows 8.1 or Windows Server 2012 R2.