What is the installed program "Photo Gallery" on my Windows 8 computer? Why it is not visible in Control Panel?

"Photo Gallery" is an installed program on Windows 8 system managed by Windows Installer.

You will not see "Photo Gallery" 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 "Photo Gallery" installed program:

Name: Photo Gallery
Publisher: Microsoft Corporation
Size: 33808 KB
Version: 16.4.3503.0728
System Component: 1
Identifying Number: {9B2E55F8-5BA8-4A45-9682-ACB6F2CC0DA5}
Install Location: 
Install Source: C:\Program Files (x86)\Common Files\Windows Live\.cache\9dd0b6fc1cdcc7e11\
Install Date: 20121127
Local Package: C:\Windows\Installer\4f46a.msi
Package Name: PhotoLibrary.msi
Uninstall Command: MsiExec.exe /X{9B2E55F8-5BA8-4A45-9682-ACB6F2CC0DA5}
Windows Installer: Yes

It is recommended to keep "Photo Gallery" as an installed program.

⇒ "Power2Go" Installed Program on Windows 8

⇐ "Photo Common" Installed Program on Windows 8

⇑ Hidden Installed Programs using Windows Installer on Windows 8

⇑⇑ Windows 8 Installed Programs