POWERSHELL: Get process using TCP port

GetAllPortsProcesses.ps1

Clear-Host

if (!(Get-Module Join-Object)) {
    Install-Module -Name Join-Object -Force -AllowClobber -Scope CurrentUser
}

$tcpConnections = Get-NetTCPConnection 

# list all ports processes:
$processes = Get-Process -Id ($tcpConnections).OwningProcess -IncludeUserName

# $tcpConnections | Format-List * #OwningProcess
# $processes | Format-List *  #id

$merged = Join-Object -Left $tcpConnections -Right $processes `
    -LeftJoinProperty OwningProcess -RightJoinProperty Id -Type OnlyIfInBoth `
    -LeftProperties LocalAddress, LocalPort, RemoteAddress, RemotePort, State, AppliedSetting, OwningProcess -RightProperties Id, ProcessName, UserName |
    Sort-Object LocalPort

$merged | Format-Table

GetPortProcess.ps1

Clear-Host

$tcpConnection = Get-NetTCPConnection -LocalPort 44369 -ErrorAction SilentlyContinue

if ($tcpConnection) {
    $tcpConnection | Out-Default 

    Get-Process -Id $tcpConnection.OwningProcess | Out-Default
} else {
    Write-Warning "Could not find port in use"
}