I have these files on my (almost) only with its own updates Windows 8, they must be compatibility telemetry elements. Having my network being monitored with NetBalancer: CompatTelRunner.exe has some communication with the internet, mostly after searching for Windows updates (of course there is only the MRT stuff now), invagent.dll rarely communicates with the internet (and with very low bandwidth) and generaltel.dll, well..., I discovered its existence today.