Utility Forge · category 01

Network tools.

Ports, connections, adapters and the question "why is this not working?"

  • What is using port 8080?
  • Why is my internet not working?
  • How do I change DNS?
  1. In development

    PortWho

    Which process owns port 8080?

    Find out exactly which process or Windows service owns a TCP or UDP port.

    1. Port
    2. Process
    3. Executable
    4. Services
    5. Signature

    Network Free Read-only

  2. In development

    NetDoctor

    Why is my internet not working?

    Tell me why my network or internet connection is failing.

    1. Symptoms
    2. Diagnostics
    3. Evidence
    4. Explanation

    Network Free Read-only

Guides

Network problems, fixed by hand.

How-to · 7 min · updated

Find what is using port 8080 on Windows

Your dev server says port 8080 is already in use. Find the process behind it with netstat, tasklist and PowerShell, learn what the listening addresses mean, and free the port without breaking something else.

Troubleshooting · 8 min · updated

Websites do not load but Windows says you are connected

Find out which layer is failing when pages will not load: the adapter and address, the router, the internet itself, DNS, a proxy or a captive portal. Built-in PowerShell checks, read from the bottom up, with what each result means and the fixes that match it.

Troubleshooting · 8 min · updated

Port in use but no process is listed on Windows

netstat shows nothing on the port, yet your program still cannot bind to it. Work through the causes one check at a time: reserved port ranges, TIME_WAIT, PID 4, IPv6, Docker and WSL forwarding, permissions and the firewall.