What is the installed program "Office 15 Click-to-Run Extensibility Component" on my Windows 7 computer? Why it is not visible in Control Panel?

"Office 15 Click-to-Run Extensibility Component" is an installed program on Windows 7 system managed by Windows Installer.

You will not see "Office 15 Click-to-Run Extensibility Component" 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 "Office 15 Click-to-Run Extensibility Component" installed program:

Name: Office 15 Click-to-Run Extensibility Component
Publisher: Microsoft Corporation
Size: 12144 KB
Version: 15.0.4885.1001
System Component: 1
Identifying Number: {90150000-008C-0000-0000-0000000FF1CE}
Install Location: 
Install Source: C:\Program Files\Microsoft Office 15\root\Integration\
Install Date: 20161225
Local Package: C:\windows\Installer\2cfa4059.msi
Package Name: C2RInt.msi
Uninstall Command: MsiExec.exe /X{90150000-008C-0000-0000-0000000FF1CE}
Windows Installer: __msi__

It is recommented to keep "Office 15 Click-to-Run Extensibility Component" as an installed program.

⇒Hidden Installed Programs using Windows Installer on Windows 7

⇒⇒Windows 7 Installed Programs