What is the installed program "Windows IoT Extension SDK" on my Windows 7 computer? Why it is not visible in Control Panel?

"Windows IoT Extension SDK" is an installed program on Windows 7 system managed by Windows Installer.

You will not see "Windows IoT Extension SDK" 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 IoT Extension SDK" installed program:

Name: Windows IoT Extension SDK
Publisher: Microsoft Corporation
Size: 16 KB
Version: 10.1.15063.137
System Component: Yes
Identifying Number: {6C115959-F605-61A2-31AD-CD745A0EBB12}
Install Location: 
Install Source: C:\ProgramData\Package Cache\{6C115959-F605-61A2-31AD-CD745A0EBB12}v10.1.15063.137\Installers\
Install Date: 20170729
Local Package: C:\windows\Installer\1f629af.msi
Package Name: Windows IoT Extension SDK-x86_en-us.msi
Uninstall Command: MsiExec.exe /I{6C115959-F605-61A2-31AD-CD745A0EBB12}
Windows Installer: Yes

It is recommended to keep "Windows IoT Extension SDK" as an installed program.

⇒ "Windows IoT Extension SDK Contracts" Installed Program on Windows 7

⇐ "Windows IP Over USB" Installed Program on Windows 7

⇑ Hidden Installed Programs using Windows Installer on Windows 7

⇑⇑ Windows 7 Installed Programs