How to check what service is listening on port :80 on Windows host

To list service processes ID (PID) In PowerShell terminal run

Get-NetTCPConnection -LocalPort 80
# or
netstat -aon | findstr ":80"

To get the name of the service along with some other informations, run:

Get-Process -Id (Get-NetTCPConnection -LocalPort 80).OwningProcess
or 
Get-Process -Id ((netstat -aon | findstr "]:80") | %{$_.Split()[-1]})

findstr – filters the rows to those containing a given string

%{$_.Split()[-1]} – grabs last column only

How to kill the process using PID with CLI on Windows

Kill all processes running at port 80

taskkill /PID ((netstat -aon | findstr "]:80") | %{$_.Split()[-1]}) /F

Search and kill PID id by process name

taskkill /PID ((ps | findstr "notepad") | %{$_.Split()[-5]}) /F

* Note that you need to replace "notepad" string with a name of your process

Kill specific PID manually

$ taskkill /PID <pid> /F

taskkill /PID 10844 /F

Find and kill the process using Windows Tools

• Start menu → All Programs → Accessories → System Tools → Resource Monitor
• or run resmon.exe,
• or from TaskManager → Performance tab.