Error: device offline

Question

The emulator is running. But when I write adb shell in my shell I get:

error:device offline

What is the reason for this? How do I get rid of it?

@Lalit Poptani what is that ? I am running the emulator,then started the shell and wrote `adb shell`. Then i get the error i have mentioned — program-o-steve, May 21 '12 at 06:39
Try `adb kill-server` and then `adb start-server`. Run `adb devices` to make sure your emulator is in the list and you shuld be set. — Barak, May 21 '12 at 06:43
@Bhavin [I get this when i type adb devices](http://i50.tinypic.com/2djs01u.jpg) — program-o-steve, May 21 '12 at 06:48
program-o-steve : maybe you should flag German's answer below as the correct one — user1093892, Feb 27 '14 at 01:29
program-o-steve: if my answer is correct, can you flag it as the correct one? thx — German, Sep 19 '14 at 03:04

German · Answer 1 · 2013-08-13T02:14:10.307

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If "adb devices" lists your device but as "offline" chances are your path leads to an old version of adb (eg 1.0.29) which has problems with latest Android 4 devices. Make sure "adb version" returns 1.0.31 or greater. Starting with Android 4.2.2, you must confirm on your device that it is being attached to a trusted computer. It will work with adb version 1.0.31 and above.

edited Aug 13 '13 at 02:14

answered Apr 08 '13 at 15:46

German

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+1 Thanks! Good hint. I forget to update my Android SDK _again_. I thought the first update fetched all new stuff. But it didn't. So after second and third update run it worked. – Strubbl Aug 12 '13 at 22:37

score 15 · Answer 2 · edited Nov 28 '14 at 18:50

15

It happened to me once. I just rebooted the device, and this solved the problem for me.

edited Nov 28 '14 at 18:50

Peter Mortensen

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answered Jul 25 '12 at 08:01

kdehairy

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It is not needed to reboot the phone. Just unplug and plug it in again, or disable and re-enable WiFi if connecting over TCP. – Alvaro Gutierrez Perez Aug 15 '17 at 19:56
I disabled `USB Debugging` and then `Developer Options`, and re-enabled them. – Stephen Hosking Sep 11 '22 at 23:42

score 11 · Answer 3 · answered Jan 26 '13 at 10:55

11

When I got that same error, I just unplugged and plugged in it and the error disappeared.

answered Jan 26 '13 at 10:55

zhangxaochen

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score 5 · Answer 4 · answered Jul 05 '16 at 10:09

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Try to run:

adb kill-server
adb start-server

Still device offline, please restart device.

answered Jul 05 '16 at 10:09

Shiv Buyya

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score 3 · Answer 5 · edited Nov 28 '14 at 18:55

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I restarted my computer, and at the same time I rebooted the phone. The adb devices returns fine.

edited Nov 28 '14 at 18:55

Peter Mortensen

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answered Jul 06 '13 at 06:16

juejiang

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score 3 · Answer 6 · answered Aug 19 '16 at 05:06

Method 1 :

run this commands in your linux terminal

sudo adb kill-server
sudo adb devices

run this commands in your CMD

adb kill-server
adb devices

"adb devices" result must show any device with id. If instead of id you are getting off-line means you need to give permission in your tab. Once you enable USB Debugging in android and connect the device for the first time you will get an alert dialog for giving permission. If you are not getting any pop-up then click on Revoke USB Permission in Developer option the try once.

Method 2:

Change the device connected mode from Media to Camera, sometimes this helped me.

Method 3 :

Update the adb as well as device drivers.

I tried many things including reinstalling Android Studio. That's the only one which helped: "Revoke USB Permissions" in Developer Settings -> Plug my device -> Give permission in an alert dialog again -> Done. — Sergey Molchanovsky, Jan 21 '21 at 07:47

score 3 · Answer 7 · answered Aug 15 '17 at 19:54

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If you are connecting through USB, unplug and plug it in again.

If you are connecting over WiFi, disable and re-enable WiFi on the phone.

answered Aug 15 '17 at 19:54

Alvaro Gutierrez Perez

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score 1 · Answer 8 · answered Oct 17 '14 at 10:48

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 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!

score 0 · Answer 9 · answered Oct 15 '15 at 23:44

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Make sure you're superuser.. Instead of 'adb start-server' do 'sudo adb start-server', enter your password (it will not echo), press enter. Then, 'sudo adb devices' and it will show as online.

answered Oct 15 '15 at 23:44

Ecip

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score 0 · Answer 10 · answered Aug 19 '16 at 03:50

I came with this condition twice.The first time I used the command "adb kill-server" in my PC, and restarted the android device. It worked. However the second time the method didn't work any more.This time I disconnected and reconnected the network. It worked.

score 0 · Answer 11 · answered Apr 24 '19 at 21:50

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This happened to me running Ubuntu 19.04 and Android 9. I fixed this by turning off developer options then turning it back on. And make sure USB Debugging is allowed in there as well.

answered Apr 24 '19 at 21:50

retodaredevil

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score 0 · Answer 12 · answered Jul 23 '19 at 04:40

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Install this tool (link) and try the following code, do not forget to have the device connected and be attentive to any message.

cd .... platform-tools/

adb kill-server
adb start-server

answered Jul 23 '19 at 04:40

Juandeyby

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score 0 · Answer 13 · answered Mar 18 '20 at 14:07

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I went to my phone settings>>Developer options>>Debugging and turned on this option: "Allow ADB debugging in charge only mode" then this problem solved for me. hope to solve for you too.

answered Mar 18 '20 at 14:07

Hamid Reza

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score 0 · Answer 14 · answered Mar 28 '20 at 07:26

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for me, it was by enabling USB Debugging in developer option:

just run adb install apk path after and it will works

answered Mar 28 '20 at 07:26

javad bat

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score 0 · Answer 15 · answered Oct 10 '20 at 08:20

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In my case

adb kill-server
adb connect [ip_address_of_device]

answered Oct 10 '20 at 08:20

Farman Ameer

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score 0 · Answer 16 · answered Nov 08 '22 at 06:28

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try following solutions

make sure USD debugging & WIFI debugging is enabled in develop options
make sure PC & mobile both connected with same WIFI if still doesn't work disconnect & reconnect the mobile and run the command again

answered Nov 08 '22 at 06:28

Dinesh

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Error: device offline

16 Answers16

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