Cannot run "ionic lab"

Issue

I cannot run the command ionic lab or ionic serve -l because I get the error: listen EACCES 127.0.0.1:8200

I've run:

npm install -g ionic cordova
ionic start myIonicApp blank
cd myIonicApp 
npm i -D -E @ionic/lab
ionic lab

Then the error occurs:

ionic-lab http://localhost:8100 --host localhost --port 8200 --project-type ionic-angular --app-name myIonicApp --app-version 0.0.1

events.js:183
      throw er; // Unhandled 'error' event
      ^
> Error: listen EACCES 127.0.0.1:8200
>      at Server.setupListenHandle [as _listen2] (net.js:1343:19)
>      at listenInCluster (net.js:1401:12)    at GetAddrInfoReqWrap.doListen [as callback] (net.js:1510:7)
>      at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:72:10)

Versions:

Node: v8.12.0

Ionic CLI: 4.8.0

Cordova: 8.1.2 ([email protected])

I've also tried to change the port with this command: ionic serve -l -p 27222 but the error "Error: listen EACCES 127.0.0.1:8200" continues.

When I run "netstat" it shows that a proccess svchost.exe is listening on port 8200. The proccess id corresponds to "System" proccess ("NT Kernel and System")

Anyone knows what may be happening?

Solution

The problem was my local IIS. It had an application running on port 8200.

Answered By - Murilo