What Is "Shell Infrastructure Host" and Why Is It Running on My PC?
Peek at the running processes in Task Manager on Windows and you’ll likely see the Shell Infrastructure Host process. If you’re curious what sihost.exe is, what it does, and perhaps why it sometimes uses a lot of CPU resources, here’s what you need to know.
Shell Infrastructure Host Start Menu Task Manager Shell Infrastructure Host Process Shell Experience Host Windows Processes
Source: howtogeek.com