Develop Reference

Unable to locate adb in Android Studio

I am new to Android Studio. I wanted to run the basic "Hello world" app in my mobile phone. So after enabling USB debugging mode in my phone, I pressed the run button, but nothing shows up in my phone. After some troubleshooting, I found out that, it shows this error everytime I try to restart the ADB server
Unable to locate ADB
Steps I followed to fix this error:
Deleted the folder C:\Users\Abhishek\AppData\Local\Android\Sdk\platform-tools
Reinstalled the Android SDK Platform-Tools from the SDK manager.
Restarted Android studio.
Nothing works.
.
In fact, as you can see adb.exe exists inside the platform-tools folder. I don't understand why android studio, is unable to locate it.

If using avast go for virus chest, will find ADB, restore it by clicking the right button.
If you are not using avast then you need to set up the below configuration.
open Android Studio settings-->System settings --> Android SDK --> select SDK tool tab -->> select "Android SDK platform tool" and install
Also, you can check ADB working well by executing this command in CMD or terminal in the platform-tools folder
ADB devices

Sometimes Android Studio is in funny mode.
Just press the Ctrl+Alt+Del button. Then select Task Manager and select ADB and end task.
You can also try File--> Invalidate Cache / Restart.
And restart your PC.

Try downloading "SDK Platform-Tools" from https://developer.android.com/studio/releases/platform-tools
Copy 'adb.exe' to C:\Users\user\AppData\Local\Android\Sdk\platform-tools.
This will fix the issue.
I also got the same bug and I have added(Optional)
C:\Users\user\AppData\Local\Android\Sdk\platform-tools\adb.exe to the exception list of my anti-virus tool

It was very dumb of me to realize that I hadn't actually connected my mobile phone to my PC the whole time. I kept using the USB connection to charge rather than transfer files, as a result of which my USB debugging was never really enabled.
It's working fine now. Thank you for your help everyone.

This is my solution for windows 7 and Moto phone. I hope it works for other versions of windows and android.
Make sure developer options and USB Debugging is enabled on your android phone (and that the phone is plugged in to your computer.)
Make sure you have adb.exe in your Android folder (For me, it's users/me/appdata/local/android/sdk/platform-tools/) . If not, you can use SDK manager to install it or download it from https://developer.android.com/studio/releases/platform-tools
Test to see if you computer detects adb.exe
Open command prompt.
Type: adb
If it can't find it, it would display nothing. If it does, it should display a bunch of text (Skip next step, go to 'install usb driver')
Make sure your computer knows where to find ADB.exe
Right click on 'computer' - click Properties.
Select 'Advanced system settings' on the left-side menu.
Click 'Environment Variables'
Under System Variables, scroll down until you see "Path". Select 'Path' and click 'Edit'
Copy the address folder where your adb.exe is located.
Under 'variable value'- Do NOT delete what is already there! Type a semicolon at the very end after all the other paths. Then paste your folder address after the semicolon. (For me it's ;C:\Users\me\AppData\Local\Android\Sdk\platform-tools) click OK
Under 'User variables for admin' - click 'New'
For variable name, type: ANDROID_HOME
For variable value, paste in the Sdk folder but not the platform-tools folder (C:\Users\me\AppData\Local\Android\Sdk)
Open command prompt and type: adb
If it list version #, then congrats to getting past one hurdle. Yay! If not, check to see if your anti-virus software have adb in quarantine.
Install Google USB Driver (or Intel Android Driver depending on what smartphone you have.)
Use SDK Manager to install the USB Driver or download it directly on the website.
Copy the location of where it is installed. (For me, it's c:\Users\me\appdata\local\android\sdk\extras\google\usb_driver)
Update the driver on your phone. Plug in your phone to your computer.
Right-click on computer - select 'manage'
Click on Device Manager
Search for 'Other Devices' and select either 'unknown device' or the name of your phone. Right-click to update driver
choose 'Browse my computer for driver software'
choose 'Let me pick from a list of device'
It will have a list. Just click 'next'
It will be empty. Click 'have disk'
Browse for the location of the USB driver. click OK
Select 'Android ADB Interface' and click 'Next'
Update the driver for your phone.
If you see the message 'Windows has successfully updated your driver software' Yay!
Restart everything.
Turn OFF developer option on your phone and disconnect.
Restart computer.
Turn ON developer option, turn ON USB debugging, and connect to computer.
Check to see if computer recognizes your phone as debugging device
Plug in your phone to your computer (Make sure USB debugging is on!)
Your phone should prompt you with a RSA key fingerprint! (You're 99.99% there!)
Check 'always allow'
Click 'OK'
Open command prompt and type: adb devices
It should list your phone as a series of numbers and letters.
CONGRATS!!!
Open Android Studio and run your app. It should list your phone if plugged in.
Woo! Yay!

ADB driver not installing for BT Moverio 200

I get this error as it shows in the image. So basically, it won't install the adb driver onto my device. So when I open android studio, it doesnt show any traces of the glasses being a connected device.
I know this because I've tried with my phone and it will show my phone as a connected device on Android studio.
I've seen other posts but they are just not helping since this is already included in instructions I've been following.
I am on a windows 8.1 laptop, should I try on ubuntu?
If I try it virtually on ubuntu will it be slow to install Android Studio and just to do things generally?
adb not working:

This may not help everyone but this fixed it for me (Windows 10 Enterprise using BT2000).
Working on the assumption that the android_winusb.inf file has been altered along with all other instructions in the BT-2000 developer guide[1].
These were the steps I took to install mine:
In device manager, right click to update drivers and choose browse computer
Instead of entering the path to the driver file here - instead click 'let me pick from a list'
Leave the left category on 'Google, Inc.' and find 'Android ADB Interface' on the right
Click 'Have Disk' and enter the path to your android_winusb driver file here.
Choose Android ADB Interface again on the next screen and follow it through confirming that you want to update it on the warning pop up.
If you check your adb devices the glasses should show as '0123456789ABCDEF device'
[1] Section 2.4 - https://tech.moverio.epson.com/en/bt-2000/1_0_4/developers_guide.pdf

Ok so I managed to get the glasses recognised as an adb. After looking at this , also this and how to get ADB working in Windows for the Epson Moverio BT-200 by Dave , .
from first link Use "Universal ADB (Android Debug Bridge) Driver for Windows": https://plus.google.com/103583939320326217147/posts/BQ5iYJEaaEH , install this driver on your computer.
Following advice of Dave, line I went on the android studio site for android_winusb .then you extract the Google USB Driver ZIP file and remember the path location to the android_winusb.inf file.
search to device manager>look for device embt2>select update driver>select you want to select driver your self and select the universal driver and samsung android device
then you have to enter the path of the driver which is the path location to the android_winusb.inf file from your downloads
click and finish to install.
the glasses should be listed as a samsung android device in device manager as a android adb device
If you open android studio, it should detect your glasses as an adb device and you can run apps on it

Android Studio Doesn't recognize my device- one plus one

I activated Developer Options" and check "USB debugging". I installed google usb driver on sdk.
But still Android studio doesn't recognize my mobile (one plus one).
I tested my mobile on my friend's laptop, it works. Also my android studio recognises Samsung when I install drivers.
But it doesn't recognize one plus one and nexsus.
Do you have any suggestion?

As I said in comment above, when I wanted to debug my app with my OPO today I got the same problem, after moving around to figuring it out, I found out it was because of ADB Driver (which for some unknown reasons got uninstalled from my system).
At first, check you Device Manager, if you see a yellow mark beside your phone, it is absolutely because of ADB Driver, so follow the steps below to install it:
Install the latest Samsung drivers: SAMSUNG USB Driver v1.5.33.0
Restart the computer (very important)
Go to Device Manager, find the Android device, and select Update Driver Software.
Select Browse my computer for driver software
Select Let me pick from a list of device drivers on my computer
Select ADB Interface from the list
Select SAMSUNG Android ADB Interface (this is a signed driver). If you get a warning, select Yes to continue.
Done!
Hope it will help you.
More on this

-Enable developer mode and usb debugging on OPO
-Open Android SDK manager either from Android Studio or the directory the SDK is saved in. 
-Tick Google USB Driver and click ok to download
-Connect OPO
-Open Device Manager
-OPO should show as unknown device
-Right Click on it
-Update or install driver
-Select from list
-Android ADB Interface
-Click ok

Information from this link OnePlusOne helped me to resolve the Chrome://inspect device not detected - Authorize popup prompt issue
Phone: One Plus One
OS: Cyanogen Version 13.1.2
Content from the link is added here :
Quick guide:
Pre-requisite : Download Google USB Driver from here
Connect your device with Android Debugging enabled to your PC
Open Device Manager of Windows from System Properties.
Your device should appear under 'Other devices' listed as something like 'Android ADB Interface' or 'Android Phone' or similar.
Right click that and click on 'Update Driver Software...'
Select 'Browse my computer for driver software'
Select 'Let me pick from a list of device drivers on my computer'
Double-click 'Show all devices'
Press the 'Have disk' button
Browse and navigate to [wherever you have extracted the downloaded file]\google-usb_driver and select android_winusb.inf
Select 'Android ADB Interface' from the list of device types.
Press the 'Yes' button
Press the 'Install' button
Press the 'Close' button
Now you've got the ADB driver set up correctly. Reconnect your device if it doesn't recognize it already.

For One Plus Phones, here is what I did and it worked. I use a One Plus 7T Pro. Before you begin, ensure Android Studio is up and running.
Go to Settings > System > Developer options.
Under Debugging, Tap on Revoke USB debugging authorisations and Tap on Ok when prompted
Switch Off the Developer Mode and Switch it back On
Switch On the Stay Awake option (if you need it)
Under Debugging, Switch On USB debugging option
Remove the USB cable from your device and reinsert it. On the device, you will be prompted to Allow USB debugging for your device ID. Tap on Allow
You should now be able to see the device detected in Android Studio.
This should work for all devices of different brands that are not automatically recognised in Android Studio.

For me the issue was in wrong USB file type transfer "Default USB configuration" option.
It was set to "No data transfer" and I needed to set it to "PTP" under

For me it was much simpler then that:
Under Developer Options
Enable developer mode and usb debugging
Under Debugging subcategory
Enable Android debugging
And my device showed right up on Android Studio 2.2 deployment target dialog.
** Android version 6.0.1
** Cyanogen OS Version 13.1.2

The previous answers didn't work for me. But following the advice from here helped me resolve the issue.
I have provided the steps I followed, but they have been lifted stright from the above link and all credit goes to them. There were a couple of deviations I had to take to make it work which were:
step 9 showed ADB device which I clicked
step 13 shows ADB didnt work but device mamanger now picks up the device and so does VS
Setup ADB & Fastboot Drivers
Step 1. To get started, download the 15-second adb/fastboot installer here and run the file on your windows desktop.
Step 2. Press Y/Yes to install ADB and Fastboot drivers and follow all the steps to continue the driver installation. Once completed you will see fastboot/adb folder on your C drive (C:\adb).
ADB-Installer
Step 3. Now the Files are installed on your desktop, next step is to configure them and setup the drivers.
Step 4. Pick your phone up and go to Settings > About Phone and tap on Build Number 7 times until you’ve enabled Developer Options, then go back to the main settings menu and go to Developer Options that magically appeared right above About Phone. And Enable Android Debugging / USB Debugging mode.
Step 5. Now connect your phone to the PC with USB cable and open Device Manager and look for your phone. It will show up under Portable Devices as your phone model number or Other Devices or ADB Interface or Android. See the screenshot below:-
ADB-Interface
Step 6. Right-click on it and select update driver software.
Update-Driver-Software
[wpsm_ads1]
Step 7. Now new popup windows will appear on your screen. From here click on the “Browse my computer for driver software”
Browse-Computer-For-Drivers
Step 8. Now from the next screen click on the “Let me pick from a list of device drivers on my computer” and hit the next button.
Let-Me-Picks-Drivers
Step 9. From the next screen click on the “Android Device” option and hit the next button to proceed.
Android-devices
Step 10. Now on the next screen you will see all the ADB drivers that are installed on your windows. Here select the “Android ADB Interface” and click on the next button to complete the setup process.
ADB-Drivers-Setup
Step 11. ADB Drivers are now properly installed. To check it is working or note. Go to the ADB folder on your C Drive which the installer created on Step 2.
Step 12. Connect your phone to the PC and open a command window in your fastboot/adb folder (C:\adb). To do this Hold Shift button on your keyboard and right-click on the empty space of the folder. See the screenshot:-
ADB-FIles
Step 13. Now the command prompt windows will appear on your desktop. And enter the following command and you will see the screen with a list of devices attached. This means the drivers are properly installed and your android is successfully connected to the window PC.
adb devices

LG G2 vs980 not recognized by ADB devices command (Win7 on virtualbox)

I have been developing android mobile apps via eclipse in school for some time now, deploying the apps to virtual devices. However, I now want to deploy them to my LG G2 android device for testing and speed purposes. I know there are posts about other devices not working, but the solutions are to no avail for me.
I am on virtualbox running windows 7. I have the necessary vb extensions installed and vb DOES detect my LG G2 (asks to view folders..etc), however eclipse/adb on my vb cannot find it still.
I have put what I thought is the proper device vendor id (1004, 0232) in the adb_usb.ini file since some others found that to help get their device detected.
I have done the commands adb kill-server & start-server many times. I have restarted the phone and vb also. I have also tried all of the phones connection types (internet/ethernet, MTP)
Some help would be awesome,
Thanks fellas

When you plug the phone in, you are given options for the "USB connection method".
You must select Internet connection or Send Images (PTP) from the list in order to use USB Debugging tools.
For selecting Internet Connection, the other options sometimes include Charge phone, Media sync, and Camera.
For selecting Send Images (PTP), the other options sometimes include Charge Phone and Media Device (MTP).

Here are may be several solutions:
1) When your device connected open Device manager(default windows tool) and found Unknown device or some not properly recognized device and try to setup driver manually.
2) Enable USB debugging option in phone settings:
go to Setting->About Phone and tap several times on Build Number,
then go back (Settings->Developer -> Options) and turn it on
3) Try to update your USB driver/adb via Android Manager launched from Eclipse.

When I upgraded my LG g2 from Android 4.4 to 5.0.2, usb debugging stopped working.
I didnt have an "Internet" option for USB connection method.
Through lots of trial, error, searching, experimenting, the I found that enabling "USB tethering" (in Settings -> Tethering & Networks -> USB Tethering) did the trick. Once I enabled USB tethering, I could download debugging programs via adb/AndroidStudio. Before USB tethering enabled, adb could not recognize my 5.0.2 device.

How to Setup ADB on Windows
Download the Android SDK package for Windows [android-sdk_r21.1-windows.zip]
Extract the zip files to your C:\ drive. Now you have a folder android-sdk-linux
Double click on SDK Manager to initiate the SDK manager. You shall perceive the following window.
Make sure everything is un-ticked. Now select Android SDK Platform-tools and install it.
During the next window, you will be prompted. Accept the license and click on Install.
When the installation is complete, close the window.
The SDK manager has now download the platform-tools successfully, which certainly includes our prior ADB.
The next step is to define the path where ADB is present.
Go to C:\android-sdk-windows\platform-tools and take note of this path.
Go to desktop, right click on Computer and select Properties.
On the left pane, click on Advanced System Settings and a new window shall open.
Select Environment Variables under Advanced tab.
Select Path variable and click edit.
Now add the path we noted in step #9 to the variable value and hit OK.
Confirm and apply all the changes.
To confirm that ADB has been configured properly, open CMD window and type in:
adb
You now have ADB successfully installed and configured on your Windows machine

Android ADB doesn't see device

I'm trying to run my applications on OMEGA T107 tablet. But adb doesn't see my device. I tried almost everything.

Some of these answers are pretty old, so maybe it's changed in recent times, but I had similar issues and I solved it by:
Loading the USB drivers for the device - Samsung S6
Enable Developer tools on the phone.
On the device, go to Settings - Applications - Development - Check USB Debugging
Reboot O/S (Windows 7 - 64bit)
Open Visual Studio
I think it was step 3 that had me stumped for a while. I'd enabled developer tools, but I didn't specifically enable the "USB Debugging" but.

I tried all the ways listed on the web for a whole day, but I didn't get any solutions. Then, I followed a link and in just two minutes my problem was solved!
By the way, it's for Windows users!
Find out the vendor id of the device from device manager.
To do this, connect the OTG port to the USB port of your computer.
Go to Start Menu and right-click on “My Computer” and chose “Properties”.
Select the “Devices” option which will open “Device Manager”.
Select your device (mostly in USB devices or Other devices) and right-click and choose “Properties”.
Choose the “Details” tab and select “Hardware Ids” from the property dropdown, you can see the hardware id, in my case it was x2207 .
Open android_winusb.inf and add these lines:
;<Device name> in our case I gave MK808
%SingleAdbInterface% = USB_INSTALL, USB\VID_2207&PID_0010&MI_01
%CompositeAdbInterface% = USB_INSTALL, USB\VID_2207&PID_0010&REV_0222&MI_01
Open C:\Users\.android\adb_usb.ini and add the following entry
0x<device id> .. in our case it is 0x2207
Restart ADB by
adb kill-server
adb start-server
Now ADB should recognize the device.

I had same issue, none of the solutions worked for me.
Open Settings Menu -> Developer Options -> USB Debugging should be on
Android 11
Settings -> System -> Developer options -> USB debugging

The normal way to fix this is indeed to restart the adb server :
adb kill-server
adb start-server
then
adb devices -l
should list connected devices
But it possible that it doesnt fix the problem. It appends to me.
I had to disable/enable the debug mode on the device, and then restart adb server.

On Windows it is most probably that the device drivers are not installed properly.
First, install Google USB Driver from Android SDK Manager.
Then, go to Start, right-click on My Computer, select Properties and go to Device Manager on the left. Locate you device under Other Devices (Unknown devices, USB Devices). Right-click on it and select Properties. Navigate to Driver tab. Select Update Driver and then Browse my computer for driver software. Choose %ANDROID_SDK_HOME%\extras\google\usb_driver directory. Windows should find and install drivers there. Then run adb kill-server. Next time you do adb devices the device should be in the list.

Not all USB cables can transfer data. Try using a different USB cable if your device is charging, but doesn't establish a connection to your machine.
Read more: How to tell a USB charge-only cable from a USB data cable - Dignited

What operating system are you on? If you running Windows you will want to make sure you have the drivers. You should also make sure that your Android SDK Manager is not only installed, but it also contains some additional things for different devices. Not sure if yours is in there or not.
Make sure that your phone has debugging enabled. I found myself having to run
adb kill-server
adb devices
often.

On windows, you will need to install drivers for the device for adb to recognize it. To see if the drivers are installed, check the device manager. If there is any "unrecognized device" in the device manager, the drivers are not installed. You can usually get the adb drivers from the manufacturers.

For Windows 8 64 bit with a Nexus 10 device, this worked for me:
https://github.com/koush/UniversalAdbDriver
It has a link at the bottom to this:
http://download.clockworkmod.com/test/UniversalAdbDriverSetup.msi

It worked for me in my Astro Tab A737
Download and install PdaNet+ from http://pdanet.co/a/ in your computer.
follow all steps in the wizard while installing .Once the drivers are installed Android studio should recognize the tablet.
Also, make sure the device is in PTP mode.

Uninstalling all old "Android ADB Interface" drivers that were installed previously and then installing the new one worked for me.

Debugging needs to be enabled on the target device in order for adb to see it.

Intel has a peach of an article on this. It's all the same driver. It's just a Device ID mismatch in the Inf file which can be edited, or Windows forced to Install the driver we point it to. Intel's article is very thorough and takes care of every hurdle you come across. The link - https://software.intel.com/en-us/xdk/docs/installing-android-debug-bridge-adb-usb-driver-on-windows

Keep in mind while you connecting device Android propose to select one of possible connection options.
In my case:
File transfer
Power charging
Media
Not all types of connection will work with ADB. In my case need to select Power charging to be able to connect to ADB

Go to Device Manager
Right-click Android Composite ADB Interface
Uninstall devices
Right-click your LocalPC then select Scan for hardware changes
Your device should be enabled
Open Command Prompt
adb kill-server
adb start-server
adb devices