Expo Couldn't start project on Android: could not connect to TCP port 5554: Connection refused

user_5078763 0
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I am using mac and Expo 4.4.4.
When I am trying to run Expo on Android Emulator Getting below error :

Couldn't start project on Android: could not connect to TCP port 5554: Connection refused

I tried the below cmds in the terminal to get rid of offline device

$ adb devices
List of devices attached
emulator-5554   offline
emulator-5556   device

$ adb kill-server
$ adb start-server
* daemon not running; starting now at tcp:5037
* daemon started successfully
$ adb devices
List of devices attached
emulator-5554   offline
emulator-5556   device

$ lsof -i :5555
COMMAND   PID    USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
adb     13691 sujayun    9u  IPv4 0xd716e907b32c7e05      0t0  TCP localhost:54347->localhost:personal-agent (ESTABLISHED)
$ kill -9 13691

$ adb devices
List of devices attached
emulator-5554   offline
emulator-5556   device

What ever I try, I am not able to rid of offline device.

Is there any way to remove this ? or start expo on TCP 5556 ?

expo react-native adb android
3 Answers

After battling for 3 days found the issue and solved it.

I checked with all processes listening on different ports

$ sudo lsof -i -P | grep LISTEN
launchd      1           root   11u  IPv6 0x19938282208649b9      0t0    TCP *:5900 (LISTEN)
kdc        196           root    5u  IPv6 0x1993828220866e79      0t0    TCP *:88 (LISTEN)
wftpserve  383           root    7u  IPv6 0x1993828220864399      0t0    TCP *:5555 (LISTEN)
wftpserve  383           root    8u  IPv4 0x199382822086dee9      0t0    TCP *:5555 (LISTEN)
mDNSRespo  285 _mdnsresponder   82u  IPv4 0x19938282276928c9      0t0    TCP *:53 (LISTEN)
MEGAclien  546          root    32u  IPv4 0x1993828225a7e8c9      0t0    TCP localhost:6341 (LISTEN)
adb       1064          root    12u  IPv4 0x19938282279288c9      0t0    TCP localhost:5037 (LISTEN)

Check with the service whose TCP is listening on 5554 + 1 = 5555

This service might be causing the automatic start of the offline emulator

Kill that process with PID,
In my case it was wftpserve service with PID 383

$ sudo kill -9 383

Then the emulator disappeared

$ adb devices
List of devices attached

Then Expo started on my Android emulator

user_50787630

Open your prompt command and type this

1-first

$ adb devices

2-second

$ adb kill-server

3-and next

$ adb start-server
user_178180340

just code

yarn or npm install in the terminal

and restart the project will definately work

user_191983260
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