com.android.ddmlib.AdbCommandRejectedException: device offline (Even when device is connected)

Question

After update of Android Studio to 2.1.2 I've been getting the following error too many times when i make a change.

com.android.ddmlib.AdbCommandRejectedException: device offline

Error while Installing APK

The problem is device was never connected and is not offline

If i unplug and re-plug the device it starts working fine again. This never happened in the previous version of AS.

Question: Is there a setting to be changed in AS for this to stop happening or it is a bug?

score 24 · Answer 1 · answered Jun 16 '16 at 10:41

24

Invalidate your Studio cache, restart your device and pc will work. Sometimes the problem with port also, just try after changing the usb port of your pc also.

answered Jun 16 '16 at 10:41

Neo

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It's windows driver / hardware problem. – Neo Aug 23 '18 at 10:22
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in my case restarting the device worked, Mi A2 running android pie – Siddhivinayak Nov 21 '18 at 07:30

score 8 · Answer 2 · answered Sep 25 '18 at 06:22

8

Re-enabling USB Debugging fixed the problem

Settings > Developer Options > Disable & Re-enable USB Debugging

answered Sep 25 '18 at 06:22

Merbin J Anselm

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score 7 · Answer 3 · edited Jun 20 '20 at 09:12

7

You just need to restart ADB , no need to restart your PC or Phone

Try the below steps:

Go to the Android SDK platform-tools directory in the command prompt

Type adb kill-server
Then type adb start-server

Now try re-connecting ...

In my case I was debugging over wifi for a long time , then the ADB server needed to be refreshed to see the connected devices again

It Happened on Pixel device running Android 8.1.0 with Android Studio 3.0

Cheers!

edited Jun 20 '20 at 09:12

Community

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answered Dec 18 '17 at 16:36

Fahad

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I agreed, I just restarted adb.exe from windows task manager and started debugging on android studio. changing the USB port also may help – mili Jul 12 '18 at 15:01

score 2 · Answer 4 · answered Nov 12 '18 at 11:15

2

Try Disabling and Re-Enabling * USB debugging. *

Under your developer option menu

This solved my issue.

answered Nov 12 '18 at 11:15

Vicky Salunkhe

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score 1 · Answer 5 · answered Feb 05 '18 at 11:37

1

I have "revoked USB debugging authorizations " under "Developer options" and it works

answered Feb 05 '18 at 11:37

Alessandro Caliaro

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Karthik Golla · Answer 6 · 2018-04-16T07:45:28.497

1

I changed settings in the Developer options in my phone and it started working just fine.

1.Permission to install apps from unknown source 2.permission to install apps via USB.

edited Apr 16 '18 at 07:45

answered Apr 16 '18 at 07:37

Karthik Golla

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score 1 · Answer 7 · answered Sep 04 '18 at 13:05

1

Had Same Problem, Just rebooted and its fixed, its the connection problem actually, so check phone's cable first

answered Sep 04 '18 at 13:05

Zubaer Haque

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score 0 · Answer 8 · answered Apr 29 '17 at 10:25

In my case, I have activated Unknown sources in my cellphone to let application installation. Because the app hasn't accepted by Google yet, so it will block installation process.

To activate Unknown sources (In my device Samsung Galaxy Tab A 9.7 is):

Lock screen and security

score 0 · Answer 9 · answered Jan 18 '18 at 14:16

0

unplug your device and click on run and after visiting selection window, plug your device again and select your connected device. it will work!

answered Jan 18 '18 at 14:16

Abolfazl Miadian

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score 0 · Answer 10 · answered Nov 03 '18 at 17:05

0

I have changed it from Charge The Device to File Transfer and it works every time.

answered Nov 03 '18 at 17:05

Hunter

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score 0 · Answer 11 · answered Jun 07 '19 at 04:47

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Had the Same Problem .. Solved after restart My AS and My Device, Don't forget to check your Caple.

answered Jun 07 '19 at 04:47

Mustafa Essam

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score 0 · Answer 12 · answered Jun 10 '19 at 13:20

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I got it solved for mac Android>Preferences>Build,Execution, Deployment>Debugger ---Uncheck => Use libusb backend

for windows File>Settings>Build,Execution, Deployment>Debugger ---Uncheck => Use libusb backend

answered Jun 10 '19 at 13:20

Abdul Hanan

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score 0 · Answer 13 · answered Jan 04 '20 at 11:09

0

Change USB port and use another USB port of your PC or Laptop. This works for me!

answered Jan 04 '20 at 11:09

Mohammad Davari

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score 0 · Answer 14 · answered Jun 21 '21 at 03:45

restart and in validate android studio
Disable and enable usb debugging
unplug device
plug device
uninstall existing app
kill and start adb server
YourComputer@YourComputer:~/Android/Sdk/platform-tools$ adb kill-server
YourComputer@YourComputer:~/Android/Sdk/platform-tools$ adb start-server

daemon not running; starting now at tcp:5037
daemon started successfully

Run app again
if it doesn't work ensure u cable or connection is good

score -2 · Answer 15 · edited Dec 04 '18 at 20:06

-2

Tools>>AVD Manager >>Actions >>Select you Device More >> Wipe Data

Start again Device

edited Dec 04 '18 at 20:06

Rahul Agarwal

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answered Dec 04 '18 at 18:30

ChandraShekhar Patel

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com.android.ddmlib.AdbCommandRejectedException: device offline (Even when device is connected)

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