Error The connection to adb is down and a severe error has occurred

Question

I ve spent days trying to launch any Android program  Even  Hello World  gives me the same error       The connection to adb is down  and a severe error has occurred     I m running Eclipse nbsp v3 5  Galileo   Google APIs 2 2 8  on a Windows XP machine   I ve used all the tricks I can find on the web  the command line  adb kill-server   the DDMS  reset ADB   I started the emulator both before and after Eclipse  and searched for ports being used by other programs   What is going on here  Is there a magic combination of versions of Eclipse  Java  ADB  emulator  and whatever else that works

User · Answer

Make sure it s not running in the task-manager processes  If so  end the process and then start it from a command prompt as in a previous answer  This worked for me

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Eclipse   preferences   Android   NDK  Check the  NDK Location  path is set correctly  and use the browse button to set it

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Another error cause would be the fact you might have set up adb exe to run with administrator privileges

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In my situation  I have the same warning  The connection to adb is down  and a severe error has occured  I have found the solution   The adb exe was moved from  android-sdk-windows tools adb exe to                               android-sdk-windows platform-tool adb exe   Only thing  Move file adb exe to  tools  And restart Eclipse

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maydenec is correct  in my case      The file was moved   I even found this file   C  Program Files  x86  Android android-sdk tools adb has moved txt   Which explained this issue   Suggestions in this file    Install  Android SDK Platform-tools   Please also update your PATH environment variable to include the  platform-tools   directory

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Use      Open Task Manager   Processes   adb exe   End Process   restart Eclipse   This worked for me   And      Open Task Manager    Processes   eclipse exe   End Process   restart Eclipse

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This problem has been plaguing me for days until I finally figured out what was causing it  It got so bad I couldn t even update my apps even after trying all the above suggestions   HTC Sync also runs a process called adb exe  HTC Sync is an optional program available when installing the HTC USB driver  I had recently updated my installation of the HTC bundle and apparently hadn t installed HTC Sync before  Checking properties on adb exe in the Task Manager showed it to belong to HTC Sync  not Android   As soon as I uninstalled HTC Sync from the control panel the problem disappeared   It s listed separately from the USB driver so that can stay   I never saw more than one instance of adb exe running  I m curious to know if people having to kill the process from Task Manager  check to see if it s actually the Android process you are killing   Please read user comments  I too have a HTC Thunderbolt   http   www file net process adb exe html

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My problem was that my firewall was preventing ADB from binding to the port it wanted to

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Go to the folder platform-tools in cmd folder platform tools available in the Android folder where you have Android backup files  Type the following  adb kill-server   and  adb start-server   then type  adb devices  adb kill-server    You can now see your device

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Simply go in Task Manager  windows users  and kill the abd exe  it is remaining active somehow   After that start Eclipse   The error      The connection to adb is down  and a severe error has occured    happened after installing plugin for Android of Netbeans  After closing Netbeans the process abd exe remained active  When you want to start again Eclipse     you will get the error   You have to manually kill the adb exe and then start Eclipse    It worked for me

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Last time I faced this problem  was solved with adb restart  If you have tried adb kill-server and adb start-server with no luck you might want to try this  When again I faced the same issue I tried all the above answers  with no luck  and this was the last option to try  It did work like a charm   Goto Android SDK Manager    Install the essential packages

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If you are using the Genymotion emulator   Make sure that the SDK path used for Genymotion is also the same path used for the Eclipse   This error also occurs if those two paths are different

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Here is a script I run to restart adb  Android Debug Bridge  server      usr bin env bash     Summary  restart adb  Android Debug Brdige  server      adb binary full path ADB BIN   adb   if pgrep adb  gt  dev null 2 gt  amp 1 then     echo  adb is running      echo  terminating adb           ADB BIN kill-server     if pgrep adb  gt  dev null 2 gt  amp 1     then         echo  did not work          echo  kill adb processes by killall          killall -9 adb     else         echo  terminated      fi else     echo  adb is not running  fi  echo  starting adb        ADB BIN start-server  echo  adb process    echo  pgrep adb   echo  done     END

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I had the same problems  and it turned out that my antivirus program  Comodo  sandboxed the adb exe  and that is why it didn t work  I closed the antivirus  and it worked just fine  Consider that

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I ve deleted all my tasks from HTC task manager and now it s working

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I am running Eclipse Neon2  on Mac OS 10 12 4 and I experienced this issue after recently upgrading my Android SDK to the latest  SDK Tools   v 25 2 5    Platform tools   v 26  and  Build Tools   v 26  and moving one of my development projects to Android Studio   Unfortunately none of the many answers here worked for me   What did work was to create a separate copy of the Android SDK in a different folder and then point Eclipse to it via  Preferences --  Android   You will have to use an older version of the SDK as indicated in this SO answer   Once you ve downloaded the separate version of the SDK and put it in a different folder than your main Android SDK  launch the SDK Manager  via  lt separate-sdk gt  tools android  and install the required  Platform tools    Build-tools  and Android versions  There are two important things to observe here though    Make sure that you do not upgrade your  SDK Tools  beyond the version that s already installed  Make sure that you install a version of the  Build tools  that is less than 26    Otherwise you may run into this issue

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I have tried  adb kill-server  and restarted Eclipse too many times  I even rebooted my computer  They don t work   Finally  I turned off test mode of my phone and turned on again  Then everything looked fine

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Try the below steps    Close Eclipse if running Go to the Android SDK platform-tools directory in the command prompt Type adb kill-server  Eclipse should be closed before issuing these commands  Then type adb start-server No error message is thrown while starting the ADB server  then ADB is started successfully  Now you can start Eclipse again    It worked for me this way   Restart your phone as well

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Devices window   toolbar more menu   Reset adb  For displaying the devices window  Menu Window   Show view   Other   Android   Devices

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The killing of the mysteriously running abd exe worked  This sudden roadblock stopped me for a long time  I was doing all sorts of command line stuff and removed the lock icon from my user folder  but nothing worked until your simple suggestion of looking for the abd in the running processes of the task manager and killing it   Another newbie roadblock I discovered an answer to  don t run Eclipse when any file other than the main  java file is active  If you run it when  for example  the main xml file is active  you will get unhelpful error messages  an odd file created like main xml out  and it wont run

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It worked for me to start my AVD emulator first  from the AVD manager   and then to run my program  The other stuff mentioned here    Restarting the ADB server didn t work though

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Update your Eclipse Android development tools  It worked for me

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AndroidSDK   Platform Tools   Kill did not work   But after restarting my computer  it worked

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For Ubuntu users  you can run the following command   sudo apt-get install ia32-libs

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Open up the Windows task manager  kill the process named adb exe  and re-launch your program

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Go to the tools folder of your Android SDK Run emulator exe -avd  lt your avd gt   It will take some time for the emulator to run  Once you see the homescreen on your emulator  open Eclipse and run your program again

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Check if your firewall didn t add a rule and blocked the connection to adb server  It uses newdev dll and your network  It just happened here  I removed the blocking rule from the firewall  and now it is fine

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Nothing worked for me  even restarting a computer  I couldn t install an app on my device  But I solved this problem by myself   Go to DDMS and choose connected device  Now try again

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I ve tried the above methods  end the adb process through task manager and all  it didn t work  But when I ran the adb exe file as admin  it worked fine

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I had a similar problem  I found out that there was another adb exe running which was started from BirdieSync  Sync Tool for Thunderbird   I found out with Process nbsp Explorer from Sysinternals  that Windows was running another incompatible adb exe  Just put the mouse cursor above the process  in Process nbsp Explorer   and you ll see which adb exe is started   I had to kill the BirdieSync process as well  because it started the wrong adb exe again   Then I could start the right adb exe  and it worked fine

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The previous solutions will probably work  I solved it downloading the latest ADT  Android Developer Tools  and overwriting all files in the SDK folder   http   developer android com sdk index html  Once you overwrite it  Eclipse may give a warning saying that the path for SDK hasn t been found  go to Preferences and change the path to another folder  C    click Apply  and then change it again and set the SDK path and click Apply again

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Close Eclipse  Use this in the terminal   sudo killall -9 adb   Run Eclipse

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I had the same problem   I entered Task manager -  find adb exe -  end process Go to the Android SDK tools directory in Command Prompt double click adb exe   That s all

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Add android-sdks platform-tools to the Windows PATH environment variable

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I got the same error  My resolution is to set the directory platform-tools to the system path and then restart the OS   Or in a DOS cmd prompt   set path  path  c  xxx platform-tools   It works for me

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I know this question has already been answered  but thought I might add that I found the problem to be folder permissions on my android-sdk directory   I tested it out by granting Full Control to Everyone  dodgy  I know      and the problem went away  I am not sure yet what the specific mix of permissions might be that it was looking for  but I assume some or other service in Eclipse didn t have execute permissions on adb exe  That said  I m a complete noob to this - just wanted to put it out there in case someone else had some insights into this   I am running Windows 7  64-bit  4 2 0 Eclipse  and 20 0 0v201206242043 ADT

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I found the path of the SDK  Preferences    Android   SDK Location  was the cause  My SDK path was the following   C  Program Files  x86  Android android-sdk   The spaces in the path is the problem  To get it to work  you must change Program Files  x86  to Progra 2  The complete right path is C  Progra 2 Android android-sdk   Now it should work

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2012-07-04 11 24 25 - The connection to adb is down  and a severe error has occurred      2012-07-04 11 24 25 - You must restart adb and Eclipse      2012-07-04 11 24 25 - Please ensure that adb is correctly located at   home ASDK platform-tools adb  and can be executed   I realized the folder of the project in Eclipse was closed  I expanded the directory and the project launched  I know this may sound like a  no-brainer   I had the  java files open on the workspace  and that was enough to make me think the project was open

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I tried this using Eclipse Juno and it worked fine    From the dropdown of the Run icon  select option Run Configuration  Make sure your project is selected Go to tab Android Under section Launch Action  select Launch Select the package name and voila  try running your application    UPDATE  It also helps to kill the process adb exe from the task manager and restart it   adb exe can be found here  Android android-sdk platform-tools   Good luck

[android] Error "The connection to adb is down, and a severe error has occurred."

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