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

"Windows Live UX Platform" is an installed program on Windows 8 system managed by Windows Installer.

You will not see "Windows Live UX Platform" 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 UX Platform" installed program:

Name: Windows Live UX Platform
Publisher: Microsoft Corporation
Size: 9252 KB
Version: 16.4.3503.0728
System Component: 1
Identifying Number: {29315CEC-E6CE-4394-84DC-6F862E8D9A52}
Install Location: 
Install Source: C:\Program Files (x86)\Common Files\Windows Live\.cache\9c3c5ddc1cdcc7e0e\
Install Date: 20121127
Local Package: C:\Windows\Installer\4f461.msi
Package Name: UXPlatform.msi
Uninstall Command: MsiExec.exe /I{29315CEC-E6CE-4394-84DC-6F862E8D9A52}
Windows Installer: Yes

It is recommended to keep "Windows Live UX Platform" as an installed program.

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

⇐ "Windows Live SOXE Definitions" Installed Program on Windows 8

⇑ Hidden Installed Programs using Windows Installer on Windows 8

⇑⇑ Windows 8 Installed Programs