[android] Android emulator-5554 offline

I'm having a problem with emulator-5554, it keeps telling me it is offline.

When I do a adb devices from the command line it says

emulator-5554 offline

Even after a fresh restart, I try that command and it still says it is offline.

The problem is when I try to install .apk files to the emulator using abd install <path> from the command prompt, it tells me that it is offline, if I create another device and run that one, then try to install the .apk files, it says I have too many devices connected. So in other words, I can't install my .apk files.

How in the world can I get rid of that damn emulator-5554? I heard that if you do a restart, it should clear all the devices, but that does not seem to be working. It is like it is getting initialized when my computer starts up. Has anyone run into this issue?

Thanks

The way that Android detects emulators is by scanning ports starting at port 5555.

The number you see in the adb devices list (in your case 5554) will be one less than the port that adb is finding open.

You probably have a process running that is listening on port 5555. To get rid of the "offline" device, you will need to find that application and close it or reconfigure it to listen to a different port.

Do you have bluestacks installed? If you do, the background processes that it runs creates the offline device "emulator-5554".

Go to the task manager and end all the processes with the description of "Bluestacks"

I tried everything but only this one works for my case: Use SDK manager, and reinstall the system image. Android Studio, click Configure, SDK Manager, Launch Standalone SDK Manager, Check all "Google APIs Intel x86* System Image", "Intel x86 Atom*System Image" and install. Then re-start Android studio.

You might have to reconfigure and wipe the virtual device with AVD Manager, make sure you choose x86 version.

I had the same issue with my virtual device. The problem is due to the Oreo image of the virtual devices that have the Play Store integrated. To solve this problem I installed a new device without the Play Store integrated and all it was fine.

Hope it helps, Bye

I found that the emulation environment comes up as "offline" when the adb revision I am using was not recent. I properly updated my paths (and deleted the old adb version) and upon "adb kill-server", "adb devices", the emulation environment no longer came up as "offline".

I was immediately able to use "adb shell" after that point.

on linux or mac the port thats blocked will emulator-id + 1 so 5555 so: sudo lsof -i :5555 will show you the pid of process that are taking the port (should be the second column) so to kill it: sudo lsof -i :5555 | awk '{print $2}' | xargs kill

then adb (fake) devices will no longer show on the list

1 . Simply "Wipe data" to fix this issue.

2 . If it doesn't work, go to emulated device and enable developer options > enable usb debugging

In MAC, you can use Activity Monitor utility, since, unlike Linux, we cannot use netstat -tulpn command in MAC. Search for the running instance of the emulator, typically qemu-system-i386. Kill that instance and you will see none of the ghost emulator running.

Simplest way to grab Activity monitor utility is to use spotlight search. just hit cmd-space and type in Activity Monitor.

Did you try deleting and recreating your AVD? You can manually delete the AVD files by going to the directory they're stored in (in your user's /.android/avd subdirectory).

Just write

adb -e reboot

and be happy with adb))

That is because of the fact that you have another virtual device installed on your machine. It might be Bluestacks as I also faced a similar problem. I uninstalled Bluestacks and then checked adb devices It was running fine then.

I also had the same issue. I've tried all described here solutions but they didn't help me. Then I've removed all emulators in the Android Virtual Device Manager and created new ones. The problem was in CPU/ABI system image configuration of the Android Virtual Device Manager. On my Windows10 machine emulator with system image x86 always is offline where emulator with system image x86_64 is working fine as expected. Just be aware of this

From AVD manager list at the actions dropdown: Cold Boot Now

restarts it without all pain above.

I'll add another possible solution here, which is what worked in my case.

I found there was a process called SpiceWorksEventProcessor running, which was tying up port 5555, and apparently being read by adb as an emulator. Killing that process was what finally removed that stubborn emulator device for me.

I'm not sure what this thing is, but if you have it, it might be the cause of your offline emulator.

Cheers

See emulator-5554 unauthorized for adb devices. On API 29 emulator I run adb devices command and got emulator-5554 unauthorized message. Then I created a new avd device from Google APIs image (in my case Q, x86), not from Google Play.

In my case, the emulator was working with Oreo and lower, but not with Pie, and everything I tried seemed to have no effect. What finally worked was updating the emulator to latest (version 28).

In my case, I have unchecked "GPU Host" and its worked :)

From the AVD Manager try the "Cold Boot Now" option in the drop-down. It worked for me!

Just Wipe user data from AVD manager and then enter adb kill-server and adb devices. Wiping data also saves lot of memory space in the System .

The "wipe user data" option finally solved my problem. just wipe user data every time you start the emulator. This always works for me! I use windows 8 x64 , eclipse

Go to windows task manager and end process "adb.exe". There might be more than 1 instances of the same process, make sure to end all of them.

Try this ...

1. Close emulator if it Running.

2. Start Emulator again and wait for its online.

3. enter Command in commandprompt and press ENTER key : adb tcpip 5555

(Make sure that only One emulator running at a time.)

1. adb -s emulator-5555 emu kill

2. Press Enter Key....

3. Done.

4. check devices by command "adb devices" in cmd.

In my case, I found some process that makes adb not work well.
You can try to kill some strange process and run "adb devices" to test.

It worked for me:
kill the process name MONyog.exe

In my case, I started in 'Cold Boot Now' and clicked on Message to allow the connection.

This solution is for Windows.

(See @Chris Knight's solution for Mac/Linux)

1. Start Windows Powershell:

   Start -> type 'powershell' -> Press ENTER

2. Run the following command: adb devices

PS C:\Users\CJBS>adb devices
List of devices attached
emulator-5656   host
emulator-5652   host
12b80FF443      device

In this case, 12b80FF443 is my physical device, and the emulator-* entries are garbage.

3. Per @Brigham, "The way that Android detects emulators is by scanning ports starting at port 5555.". The port number is indicated after the emulator name (in this case 5656 and 5652). The port number to check is the emulator port number plus 1. So in this case:-

   5656 + 1 = 5657

   5652 + 1 = 5653

   So let's see which program is using these ports. In this case, the ports to check both start with "565". So I'll search for ports in use starting with 565. Execute: netstat -a -n -o | Select-String ":565"

PS C:\Users\CJBS> netstat -a -n -o |  Select-String ":565"

  TCP    127.0.0.1:5653         127.0.0.1:5653         ESTABLISHED     5944
  TCP    127.0.0.1:5657         127.0.0.1:5657         ESTABLISHED     5944

4. The final field in this output is the PID (Process ID) - in this case it's PID 5944 for both of these two ports. So let's see what this process ID is. Execute: tasklist /v | Select-String 5944. Replace 5944 with the output of the previous command:

PS C:\Users\CJBS> tasklist /v | Select-String 5944

adb.exe                       5944 Console                    1      6,800 K Running         MyPCName\CJBS          0:06:03 ADB Power Notification Window

What a surprise. It's ADB. As noted by other answers, it could be other programs, too.

5. Now, just kill this process ID. Execute kill 5944, replacing 5944 with the PID in the previous command.

PS C:\Users\CJBS> kill 5944

6. To confirm that the spurious emulator is gone, re-run the following command: adb devices

PS C:\Users\CJBS>adb devices
List of devices attached
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
12b80FF443      device

ADB re-starts (as it was previously killed), and it detects no more fake emulators.

In my case the cause was that I had resumed a VM with android-x86 inside. Rebooting the VM with Android-x86 and restarting the adb server fixed the problem.

Enable USB Debugging into your emulator

1. Settings > About Phone > Build number > Tap it 7 times to become developer;
2. Settings > Developer Options > USB Debugging.

That's it enjoy

Simply delete and created gear avd again.It will work.

If you are on Linux or Mac, and assuming the offline device is 'emulator-5554', you can run the following:

netstat -tulpn|grep 5554

Which yields the following output:

tcp        0      0 127.0.0.1:5554          0.0.0.0:*               LISTEN      4848/emulator64-x86
tcp        0      0 127.0.0.1:5555          0.0.0.0:*               LISTEN      4848/emulator64-x86

This tells me that the process id 4848 (yours will likely be different) is still listening on port 5554. You can now kill that process with:

sudo kill -9 4848

and the ghost offline-device is no more!

All above answers didn't helped,and then I deleted and recreated emulator all worked fine

I finally solved this problem, I had to go to the Developer options from the Settings in the Emulator, then scrolled down a little, turned on the USB debugging. Instantly my device was recognized online, and I no longer faced that issue. I tried restarting android studio and emulator, killing adb process, but those did not work.

I solved this by opening my commandprompt:

adb kill-server

adb devices

After starting up, ADB now detects the device/emulator.

If the emulator is already open or executing it will tell you is offline. You can double check on the Command Line (Ubuntu) and execute:

 adb devices

You must see your emulator offline, you have to close the running instance of the emulator (since the port will show as busy) and after that you can run your application. Hope this helps someone.

Ensure that your enable ADB integration is marked; go to Tools>Android>Enable ADB integration .

if doesn't checked , check this option and close your virtual device and re-open it . this worked for me.. good luck!!

open your emulator,

setting --> about emulated device --> click Build number repeatedly-->open developer options --> open USB debuggin

step 01: Delete current emulator from AVD manager step 02: Add new emulator. select device => select system image, in this step go to x86 images tab and select one which has the target with google APIs. step 03: Finish all steps. Your're good to go ?