What Is “COM Surrogate” (dllhost.exe) and Why Is It Running on My PC?

If you poke around in your Task Manager, there’s a good chance you’ll see one or more “COM Surrogate” processes running on a Windows PC. These processes have the file name “dllhost.exe”, and are part of the Windows operating system. You’ll see them on Windows 10, Windows 8, Windows 7, and even earlier versions of Windows.
by Chris Hoffman via How-To Geek