Chrome DevTools Devices does not detect device when plugged in

Question

I cannot seem to get the DevTools Devices feature to work on my Samsung Galaxy S4 even after following the steps outlined at https   developers google com chrome-developer-tools docs remote-debugging  My device has Chrome v32 and Chrome Beta v33  while my PC has Chrome v33 and Chrome Canary v35   USB debugging is enabled on my device and device driver has been installed  I have never got the prompt as outline in step 3 from the above link to approve the RSA key fingerprint yet the device does connect to my PC to allow media transfer  I have even revoked all USB debugging authorizations as per the link above   I don t have any thing extra installed on my PC for Android development which may perhaps be the issue  I wish to utilise this feature to inspect web pages from the devices point of view

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I tried  maurice cruz answer and was unable to get the actual drivers  Then I found this post which had a download for global LG driver  not sure if it covers all  but many  for their devices  After installing  then toggling usb debugging off then back on  I was prompted with RSA acceptance

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On a Galaxy S7 and Windows 10 laptop  all I had to do whilst connected to the computer was change the USB connection mode to  Audio Source   Phone Settings   Developer Options   USB Configuration     This then immediately came up with the on-device prompt to allow the RSA key fingerprint  Then the dev tools on computer recognised my device   Why this works I do not know  however it is by far the simplest of solutions  and without the need for installing unnecessary software   I have also had some luck changing it to  MTP  Media Transfer Protocol   mode too  but only on occasion   Edit    The MTP option no longer works for me    In addition to Audio Source  setting the connection mode to MIDI also works  It is alot easier to change the connection mode by accessing it straight from the device s notification bar - Tap the  Transferring media files via USB  or the equivalent notification   Using MIDI is probably the easiest of the two since it doesn t require going into several setting screens to access it

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Using an LG G7 and Windows 10 at the moment  For me  once the phone is physically connected  changed the USB connection mode to Photo transfer  I was originally using File transfer  and Chrome s Remote Devices detected my phone  As far as I know  I have only the mobile driver installed  no ADT etc

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Ubuntu Linux 20 update   You may no longer have to do any of the commands below  sudo apt install -y adb is sufficient  Chromium 83 has that port forwarding rule enabled by default  Older answer   For anyone using Ubuntu  I used the following   https   github com M0Rf30 android-udev-rules  Take note of the add group name command needed for Ubuntu 16 users   I also installed the ADB tools sudo apt install android-tools-adb and sudo apt install android-tools-fastboot and didnt need the whole Android SDK  Lastly  don t forget to add the port forwarding in the devtools settings next to device where your phone has finally connected  i e  8080   localhost 8080

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workaround if you don t have ADT  Android Development Toolkit  installed   Managed to detect android based Samsung Galaxy phone after downloading andorid SDK platform-tools zip and running the following command   adb devices   It started some deamon  found attached device  and I was also able to see it in chrome canary inspect tab   previously I also installed  Universal ADB driver  but not sure if this was required

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Had a nightmare with this today Samsung Galaxy Note 9 and a Windows 10 Laptop without Android Studio  Here are working steps to get debugging   1  Enable developer mode on the phone in the usual manner and turn on  USB Debugging    2  On your computer install the Samsung USB Drivers for Windows https   developer samsung com galaxy others android-usb-driver-for-windows  3  Open Chrome on your Computer - bring up Remote Devices in dev console  at the moment it will say no devices detected    4  Connect your phone to your computer via USB cable   5  Accept any prompts for authorisation and wait until the computer says  your device is ready    etc   6  On your phone  swipe down the top menu and tap  P Android system  - select  MIDI  under  Use USB for    7  Various setup notifications will appear on your PC  when they are finished you will get the authorisation prompt for debugging on your phone  Accept it  Wait a few more second and you will find the phone now appears in Chrome Dev tools on the computer  and will be connected in a few more seconds   You re welcome

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Chrome appears to have bug renegotiating the device authentication  You can try disabling USB Debugging and enabling it again  Sometimes you ll get a pop-up asking you to trust your computer key again   Or you can go to your Android SDK and run adb devices which will force a renegotiation   After either  or both   Chrome should start working

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I know this is an old question but here is my answer that solved it for me   I had gone through all of the articles I could find and tried everything   It would not work for me on a mac or PC   Solution   Use another USB cable     I must have grabbed a poor quality cable that did not support file transfers   I used a different USB cable and immediately got prompted for ptp mode and authorization for remote debugging

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ADB must be running  Just go to  C  Users yourUserName AppData Local Android Sdk platform-tools and run adb devices  daemon should start and then show all connected devices

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I solved this problem without installing any Samsung or Android SDK drivers or having to select MIDI or Image transfer options  as detailed in the many answers above spanning several years   For me  on Windows 10  the problem was caused by the Windows 10 built-in app called Your Phone   I only had to repair the app in its Advanced Settings   There might be an easier way to access the app s settings but I accessed them this way    System Settings Add or Remove Programs Click Your Phone from the list Select Advanced Options Select Repair under Reset options   After this  when I reconnected and toggled USB Debugging on my Android phone  Samsung A30   my phone prompted me for approval of the RSA key fingerprint  which allowed Chrome DevTools to finally recognize my phone

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I have been using this tool for years on different computers and with different devices  I often found that chrome   ADT does not see my device   In this case only thing that works for me is to reset ADB deamon   adb kill-server   or   and  adb usb   After you re-plug your device a message will be shown on your device asking you to allow USB debugging from the computer connected  It s really important that this request be allowed

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run adb command line  like this  adb devices

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If running on Huawei or Honor phones  make sure to install and run HiSuite on your computer  USB debugging only works when HiSuite is on

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Just adding this here for reference  I was trying to connect an LG G5 Android phone and Chrome dev tools did not recognize it until I downloaded the LG usb driver here   Good luck  all

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On the phone make sure that the debugging mode is turned on

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If you are using  MTP mode  for USB computer connection  Change it to  PTP mode  or  Card reader mode    I have same issue and it works fine to me

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Toggling  Discover USB devices  seemed to kickstart something after I d toggled the enable debugging feature on and off on the phone    Also a different cable may have been the issue  My case may have been interfering with the connection for data  but not sure

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There is a necessary step which is not detailed  ADB must be running  it is not because it is installed that it will run to establish the connection  For an unknown reason to open  quot developer tools quot  on chrome  canary  will not necessarily launch the run of ADB with good parameters  Then you will not see on the smartphone the question  quot Confirm remote connection with  your pc address   quot  while on PC you can see on the connection panel  quot pending unknown connection quot   Then necessarily if this not happens the connection will not be established  Note that some other tools launches ADB but what important is to launch ADB and establish the connection  When you run  quot  gt ADB connect  IPofYourSmartphone port   quot  or ADB is run by a soft to get right connection  ADB sends the request which show the panel confirmation on your Smartphone This is too valid for USB or Wifi connection  If you use on android a tool like  quot ADB wireless by Henry quot  you will get a full guide to get a wifi debugging remote connection

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None of the mentioned answers worked for me  However  what worked for me is port forwarding  Steps detailed here    Ensure you have adb installed  steps here for windowd  mac  ubuntu  Ensure you have chrome running on your mobile device On your PC  run the following from command line   adb forward tcp 9222 localabstract chrome devtools remote On running the above command  accept the authorization on your mobile phone  Below is the kind of output I see on my laptop       gt  adb forward tcp 9222 localabstract chrome devtools remote    daemon not running  starting it now on port 5037      daemon started successfully   Now open your chrome and enter  localhost 9222  and you shall see the active tab to inspect    Here is the source for this approach

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I ve worked with six different Android devices and multiple cables and I have to say that debugger works unstably  Sometimes it can see the device  sometimes it doesn t  Sometimes restarting Chrome helps  Here is a related bug https   bugs chromium org p chromium issues detail id 788161  may be you can contribute with your evidence

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This Worked for me  Go to Developer Options on your device and disable the  quot USB Debugging quot  and after sometime enable it again

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Using a Samsung Galaxy S9 running Android Pie  -- May 2019 Similar to the answer above  and NickW s post for that answer  Once your device is connected  instead of going to settings  go to the phone s notification bar   Android System and  Tap for other USB options   Select MIDI under the options and you re good to go

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Note - this worked for me using a Samsung S6  I d appreciate any comments on the phone version used  for anyone these instruction work for   If your phone is connecting to your computer and being recognised on the computer  and you ve enabled USB debugging on your phone  but the phone doesn t appear under  Remote devices  in the Chrome developer tools  then you can first try restarting the automatic discovery process by selecting the following on your phone -  Settings   Developer Options   Revoke USB Debugging Authorizations    If this doesn t work  then the problem is likely that the Android Debug Bridge Daemon is either missing or not running on your computer  info about ADB -  https   developer android com studio command-line adb html   You don t need the full Android SDK to use ADB  you can download the standalone Android SDK Platform Tools from here   https   developer android com studio releases platform-tools html  First  install the tools for your platform  I m using Windows  and the steps for me were   -Unzip the download into c  platform-tools  I just put it here for    convenience  you can choose a different location    -Open command prompt  run as administrator  in folder  and run the    following command   adb devices    The adb exe is in our folder    This will start the daemon and show you a list of attached Android devices   If you see  unauthorized  next to a device  it means you have to unlock your phone and choose  allow access to device data   then  always allow access from this computer   You should then see your phone connected in the developer console     You ll need to have the Daemon running every time your computer restarts  Put a  bat file in your startup folder  to run the daemon every time your computer starts  if you ve been following my instructions exactly  the content of the  bat file you ll need to create will be c  platform-tools adb devices       If you now have difficult accessing a URL  e g   localhost   that   you re sending to Chrome on your Android device   via the Chrome dev   tools on your computer   that s a different issue  See this question   for advice   How can I access my localhost from my Android device        in brief  you need to make sure your computer and phone are connected   on the same network  so connect both onto the same wi-fi network or   tether your computer to your phone s hotspot  then run ipconfig to get   your wireless IPv4 IP address  and use that IP in the URL you want to   view on your phone      Note  For the initial debugging connectivity to work  you need to be using MTP mode  Media Transfer Protocol  on your Android  for USB transfer  MTP is the default   There s a fix mentioned in one of the answers that involves switching this mode to something else  however that probably just triggers some type of re-recognition  and you re likely to be automatically switched back to MTP mode anyway if you disconnect then reconnect the phone

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Chrome  Remote device  stop working after a few months when I didn t use it   I resolved this issue   in  development option  of my device  samsung J3  I canceled usb debugging authorization then in my computer  I execute  adb devices  in  C  Program Files  x86  Android android-sdk platform-tools  folder a prompt appears in my device asking me weather I allow my computer to debug apps or not  I click yes then chrome has detected my device

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I am new to app programming and this was the first problem I ran into when I tried to get a sample program debug using my LG G3 device  The post above with detailed instructions should work for all  I am adding my experience in case it helps other   I had followed instructions step by step but one  That is  installing the USB driver from my OEM  My phone kept notifying that the debugging is on  in the notification area  and I could transfer data as well as charge  That made me think that appropriate USB drivers are installed  But it wasn t  Finally I went to LG site and downloaded the USB driver for my LG G3  Right after I installed the driver and reconnected the phone to the computer via the cable  I got the RSA key prompt  My Chrome now detects it and I was able to get my app run on my phone via Android studio as well

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What I had to do was disable  Discover network targets  at chrome   inspect  devices   That s the only thing that solved it for good in my setup chrome Version 78 0 3904 97 deepinOS debian based

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To get the functionality up and running    Follow steps at https   developers google com chrome-developer-tools docs remote-debugging Install Windows USB driver http   developer samsung com android tools-sdks Samsung-Android-USB-Driver-for-Windows Install Android SDK http   developer android com sdk index html Install Android SDK Platform-tools http   developer android com sdk installing adding-packages html  this step was blocked on corporate wifi so I installed the single ADB package it required https   forum xda-developers com showthread php t 2317790  Use command prompt to run ADB  in cmd go to the install directory of the ADB tools and type  adb exe  might need to start and stop ADB using adb kill-server and adb start-server  Connect phone and browse to about inspect in Chrome on desktop  ensuring a Chrome browser is open on your device   Following the above steps I got the RSA key fingerprint prompt to accept then I saw my device in Chrome   Definitely not as easy as I thought it would have been but at least it now works   Update 24 February 2016  So I updated to Windows 10 and now have a Samsung Galaxy S5  devices running Chrome v48 0 2564 116 m and v48 0 2564 95 respectively  Followed the steps from the Google docs and   it didn t work again  no RSA key prompt  So I began to follow my steps as above and thought there had to be a faster way as the Android SDK was over 1GB download   This time I tried    Follow steps at https   developers google com chrome-developer-tools docs remote-debugging Install Windows USB driver http   developer samsung com android tools-sdks Samsung-Andorid-USB-Driver-for-Windows  the PC alerted me saying it was already installed but I still did it anyway  Install the single ADB package required https   forum xda-developers com showthread php t 2317790  Go to the ADB install folder which for me was C  Program Files  x86  Minimal ADB and Fastboot  Open command prompt and run adb devices  alternatively I could have run adb start-server but the prior gives a more informational response    Now  with Chrome open on my phone and chrome   inspect  open on my desktop I can see the inspect options   Next problem  I need to repeat the same steps each time I reboot Windows  To solve that issue    Open a text editor and copy in  C  Program Files  x86  Minimal ADB and Fastboot adb  devices Save that file as adb bat in the Windows Startup folder located at C  ProgramData Microsoft Windows Start Menu Programs StartUp   Note that the file does NOT need to be called adb bat as long as it is a  bat file  The command you copied into the file has the default install path which you may need to alter for your set up   Now I have the Chrome Inspect feature working when I need it   Bit thanks and shout out to all others who have contributed their answers to this question which helped guide me towards a useful update to my answer  Please give credit to other answers where you find they have helped you too

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Samsung Note 8 User here - all i had to do was  Enable USB Debugging on the phone  Install and run the  quot ADB and Fastboot quot  tool Input command adb devices in the adb prompt  Go to chrome   inspect  devices and the device shows up   After that i got a message on my phone and chrome recognized the phone

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Samsung phone   PC with Windows   First of all you need to turn on USB debugging on your phone    Settings   About phone   Software information   Build number   tap it 7 times to turn on developer mode   Settings   Developer options   USB debugging  turn it on    Then on your PC    Install Samsung USB driver https   developer samsung com mobile android-usb-driver html Install ADB https   forum xda-developers com showthread php t 2317790  in the forum scroll down to the section  Downloads  to get the newest version of ADB   After ADB installation CMD should pop up -  start ADB with command  adb devices   for example  C  Program Files  x86  Minimal ADB and Fastboot  adb devices   Connect your phone to your PC with USB cable Alert about the connection should pop up on your phone  allow it  In Chrome on your PC open Developer tools   More tools   Remote devices and you should finally see your phone being detected

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If you have andorid 9 in your mobile you must update Android SDK in Android Studio    Open Android studio and go to Settings  System Settings Android Select Android SDK  You will see new version of SDK  Click to apply You mobile phone will want to access now on MIDI mode

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If you re on windows  you need to install the drivers for your phone   You can get them here   If it still doesn t work  I ve had luck connecting by manually restarting the Android Debug Bridge manually  More info is here

[google-chrome] Chrome DevTools Devices does not detect device when plugged in

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