What Is “Windows Modules Installer Worker” and Why Is It Running on My PC?

If you hear your computer’s fans spin up and feel it getting hotter for no apparent reason, check the Task Manager and you might see “Windows Modules Installer Worker” using a lot of CPU and disk resources. This process, also known as TiWorker.exe, is a part of the Windows operating system.
by Chris Hoffman via How-To Geek