Blinking Option In Connected Devices List That Won't Let Me Debug Any App

I have this weird problem that I have a blinking option ( appears for a second and then it's gone; and then appears again and so on) when I try to deply an app in the connected dev

Solution 1:

I executed this command:

netstat -anob

And realized another unrelated app was using port 5556:

  TCP    0.0.0.0:55560.0.0.0:0              LISTENING       12724
 [videostream-native.exe]
  TCP    0.0.0.0:55570.0.0.0:0              LISTENING       12724
 [videostream-native.exe]

Videostream is the app to stream video to chromecast. That was the culprit. Killed the process and now is not blinking anymore.

Solution 2:

I faced same issue on Mac and couldn't find it fully addressed anywhere. This SO answer and many other I read gave me a hint.

1. I opened Mac network utility (Command+Space and then type network utility). Select port scan tab
2. In address I put 0.0.0.0 for any local address
3. Click scan. Check port that is closer to what the Studio is complaining. Mine was complaining 55580 and scanner showed up 55581.
   4. Then check which process ID is running on that port with lsof -i :<PORT>
   5. Then check process details with ps -x <PID>

Close that specific app that is causing the issue. For me it was VS Code