What is the installed program "Windows Live SOXE Definitions" on my Windows 8 computer? Why it is not visible in Control Panel?

"Windows Live SOXE Definitions" is an installed program on Windows 8 system managed by Windows Installer.

You will not see "Windows Live SOXE Definitions" listed on "uninstall or change a program" in Control Panel, because it is flagged as a hidden system component in the registry (SystemComponent=1).

Information related to "Windows Live SOXE Definitions" installed program:

Name: Windows Live SOXE Definitions
Publisher: Microsoft Corporation
Size: 104 KB
Version: 16.4.3503.0728
System Component: 1
Identifying Number: {4FA8F084-C42F-45E1-B7E5-E0C8A1083DC5}
Install Location: 
Install Source: C:\Program Files (x86)\Common Files\Windows Live\.cache\9ac6077e1cdcc7e09\
Install Date: 20121127
Local Package: C:\Windows\Installer\4f452.msi
Package Name: soxe.definitions.msi
Uninstall Command: MsiExec.exe /I{4FA8F084-C42F-45E1-B7E5-E0C8A1083DC5}
Windows Installer: Yes

It is recommended to keep "Windows Live SOXE Definitions" as an installed program.

⇒ "Windows Live UX Platform" Installed Program on Windows 8

⇐ "Windows Live SOXE" Installed Program on Windows 8

⇑ Hidden Installed Programs using Windows Installer on Windows 8

⇑⇑ Windows 8 Installed Programs