Stop unknown AppDetectService using port 8000 on windows 10

Question

I have an unknown AppDetectService using my port 8000 and I am not able to figure out how to close it down or kill any process that seems to be running it. Its being run by System process on PID 4(found that by netstat and searching through task manager). Trying to search for the file running it on task manager leads to ntoskrnl.exe. Also task manager shows it may slightly be using GPU. So my guess is either a system process is holding the port or more probably something is using some kind of system available servers to host a service. Hitting it on the browser shows up this page: Netstat results:

task manager screenshot showing GPU may also be firing:

Please help me kill this abomination once and for all.

Answer 1

I have used Process Explorer to find out what service was using this port. Since it was impossible to find it even like this, I started to shut down service by service until port 8000 wasn't occupied any more.

In my case, port 8000 was taken over by drivers for Sound BlasterX AE-5 sound card. Process Creative.AudPosService located in C:\\Program Files (x86)\\Creative\\Connection Service has been using this port.

Luckily, it is possible to change this port. Open Creative.AudPosService.exe.config and change line where port number is located <add baseAddress="http://localhost:8000/"/> to <add baseAddress="http://localhost:9999/"/> or anything else that don't interfere with your work. Restart windows and it should be fine.