I know this question has been asked many times - I've read them all and followed most of the suggestions.
I have a new computer, windows 10, so a clean install of AS 3.5.3 . All fine, except trying to get adb to work. I get 'Unable to locate ADB' when after finding no devices I try to restart ADB.
There's also a series of error messages in the event log:
18:16 Adb connection Error:An existing connection was forcibly closed by the remote host
18:16 Unable to open connection to: localhost/127.0.0.1:5037, due to: java.net.ConnectException: Connection refused: connect
18:16 Connection attempts: 1
18:16 * daemon not running; starting now at tcp:5037
18:16 * daemon started successfully
adb.exe is visible in the right place in platform-tools. But I've tried deleting and reinstalling platform-tools. Reinstalling AS, and not using old setup configurations. I've run AS as an administrator, checked file properties in platform-tools, rebooted the computer, I don't have antivirus except windows defender, and I've run that over the platform-tools folder and it didn't object to that... so I've run out of ideas! The setup looks just the same as in my old computer, and everything works on my old computer (but slowly!).
Any other suggestions? Are those error messages significant.
Thanks.
I should have said I was trying to connect adb using wifi. I installed and android wifi adb plugin (File, Settings, Plugins) and now it's working.
I have 2 other machines with AS on them, and adb over wifi works fine and I never had to do this before.
Edit: I have been asked not to use this post as an answer. It's true, my experience doesn't offer a useful solution to anyone (can't be sure that installing the adb plugin actually helped) but adb is working now, so I don't need anyone bothering themselves trying to figure out a problem that no longer exists. In that sense, it's an answer.
Related
So, I am trying to run an emulator in Android Studio using the AVD Manager, however it never loads my app in the emulator and when I check flutter doctor it states that no devices are connected. Also, whenever I have Android Studio open, the following text repeats in the event log until I close Android Studo:
12:47 AM * daemon not running; starting now at tcp:5037
12:47 AM * daemon started successfully
12:47 AM Adb connection Error:An existing connection was forcibly closed by the remote host
12:47 AM Cannot reach ADB server, attempting to reconnect.
12:47 AM error: protocol fault (couldn't read status): Connection reset by peer
12:47 AM 'C:\Users\Danny\AppData\Local\Android\Sdk\platform-tools\adb.exe start-server' failed -- run manually if necessary
I would also like to mention that the emulator was working perfectly fine a week ago, so my computer can handle it, I just did something that broke it. I have also tried replacing my platform-tools folder,re-installing Android Studio, re-installing flutter, using adb kill-server and adb start-server. Nothing seems to work.
edit: also closing adb.exe in the task manager works... but I need to be able to click on it to close it. It pops up in my task manager for half a second then goes away seemingly randomly.
edit #2: instances of adb.exe keep opening and suspending in the task manager. I believe this is the problem but solutions online are not working.
It seems this issue has no exact solution, because the cause of this issue is not same for everyone. However, if you have faced this issue recently in Android Studio Bumblebee (2021.1.1) after updating from Arctic Fox, then the problem might have happened due to adb mDNS for wireless debugging.
To solve this issue, disable mDNS for wireless debugging from here:
Android Studio > Settings > Build, Execution, Deployment > Debugger > Untick "Enable adb mDNS for wireless debugging"
SOURCE: https://stackoverflow.com/a/70941381/1372973
This seems to be an issue with networking on Windows 10. You can try downgrading to gradle 6.1.1 or upgrading to gradle 7.0. Another workaround involves disabling the mobile hotspot on Windows 10. See this GitHub issue thread for more details.
I've been using AS for months, but since two days I get an error when I try to run my app:
Unable to run 'adb': null
'C:\Users\lapof\AppData\Local\Android\Sdk\platform-tools\adb.exe start-server' failed -- run manually if necessary
* daemon not running; starting now at tcp:5037
could not read ok from ADB Server
* failed to start daemon
error: cannot connect to daemon
I've read about a lot of people having this problem, but the solutions provided don't work for me. I read these questions in particular:
Daemon not running. Starting it now on port 5037
Android ADB - Daemon still not running
How to resolve the "ADB server didn't ACK" error?
Eclipse error "ADB server didn't ACK, failed to start daemon"
Adb won't start
How to resolve the "ADB server didn't ACK" error?
Daemon not running. starting it now on port 5037 * Cannot open 'nul': The system cannot find the file specified
A lot of answers to these questions say to close adb.exe from task manager, the problem is that adb.exe is not running and if I try to restart it by typing .\adb start-server on a PowerShell window I get the same error.
I also try to restart my PC but it didn't work.
On the Android device I'm trying to connect to (Samsung Galaxy S8) I enabled USB debugging. I even tried to eliminate all the authorized devices, but nothing worked.
I checked if the 5037 port was used by other processes, but it is used by adb.exe (and the firewall state on that port is allowed and not limited). By the way, as I said, in the task manager adb.exe is not present.
Last I tried to follow the instructions provided in the last question I linked (basically I re-downloaded adb.exe).
Initially I ran .\adb start-server and this strange error occurs:
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
** daemon still not running
error: cannot connect to daemon
and then when I try to run my app on Android Studio it occurs this new error when it tries to start adb:
Unable to run 'adb': null
'C:\Users\lapof\AppData\Local\Android\Sdk\platform-tools\adb.exe start-server' failed -- run manually if necessary
ADB server didn't ACK
* failed to start daemon *
and then if I try to .\adb kill-server and then .\adb start-server or .\adb devices or .\adb usb the same error occurs again.
Moreover when I connect my device now it asks me to authorize my PC to connect.
I don't know if this can help, but lately I deactivated a lot of Windows services (but I don't think I deactivated something related to Android Studio).
Details
PC: Compaq
PC OS: Windows 10 Home
Device: Samsung Galaxy S8 (Exynos)
Device OS: Android 8.0
AS version: 3.0.1
The solution which worked for me -
Open Command Prompt as administrator and type
adb start-server
That's it
I had same problem a moment ago. I solved it:
Run CMD as Administrator
Enter adb devices to CMD.
The output for me is :
C:\WINDOWS\system32>adb devices
List of devices attached
* daemon not running; starting now at tcp:5037
* daemon started successfully
P9BCS87ABS9SCD5 device
Usually that's caused by the WinNAT service, restarting which solves the issue.
Just open the Command Prompt or PowerShell as Administrator, and type the following commands there:
net stop winnat
net start winnat
And wait a bit for the Android Studio to reconnect to the ADB.
P.S. If it doesn't reconnect, just type the following commands to restart the ADB:
adb kill-server
adb start-server
I solved the problem on my own.
Out of frustration I opened Control Panel > System and security > Windows defender firewall > Allowed applications and I added adb.exe (both private and public networks).
I came back to Android Studio, ran the app and magically it managed to initialize ADB and my phone connected via USB was there.
I don't really know why this worked, since when I checked in Start > All Programs > Accessories > System Tools > Resource Monitor > Network > Listening Port it said that on port 5037 the firewall was allowed.
Moreover I don't know why up to a week ago all worked fine and now I had to do this process to make it work.
If someone more experienced manages to explain this behaviour better I'll update this answer (or accepts his as best answer)
Run CMD or PowerShell as administrator
Then run the following commands:
net stop winnat
In correct folder run:
adb start-server
net stop winnat
Below solution solved my problem:
Go to your task manager
see if adb is running
right click & end the task
Go to command prompt
run adb devices
it will work fine
For my situation
The latest platform is version 30.0.3. I also have the same problem as this:
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
My solving:
Step 1: downloading platform-tool version 28.0.1: https://developer.android.com/studio/releases/platform-tools#2801_september_2018
Step 2: remove platform-tool: go to SDK Manager -> SDK tools
Uncheck "Android SDK Platform - Tool"
Click Apply
Step 3: Going to folder android -> SDK and pass new platform-tool
Step 4: ADB devices.
Then It's working for me.
SDK Manager -> SDK tools
Uncheck "Android SDK Platform - Tool"
Click Apply
After using Android Studio and Emulator without any problems, suddenly it stop to connect to the Emulator, even adb server was running (killing and starting), firewalls raised for all the programs (adb.exe, qemu-system-x86_64.exe, studio64.exe, etc), port 5037 freed, uninstalled and installed again the programs, even the whole Android Studio from scratch. I got verything running OK, but no connection between AS and Emulator.
The solution to my problem was to run Android Studio AS ADMINISTRATOR, it seems that when I updated the program to 3.5.2 somehow the status changed, causing me the problem.
What worked for me in all adb unresolved cases:
adb kill-server
or
adb disconnect
I would just try them both and one will do the trick.
I had this issue several times. It seems if when system is starting, device is connected by USB cable, daemon will connect correctly and no problem will occur. Of course I want a better solution, because it is very hard for me to shut down and start again every time.
Had same issue after upgrading to Android Studio Bumblebee | 2021.1.1
To solve it, go to Settings -> Build, Excecution, Deployment -> Debugger
Then uncheck the option Enable adb mDNS for wierless debugger
I had the same error.
Error on android studio
i use easytether, which was causing the error when is connected.
http://www.mobile-stream.com/easytether/android_faq.html#adbmacosx
After u disconnect it, everything should work fine.
I read many posts to fix this problem. None worked for me.
Error:
Target device: lenovo-lenovo_a6000-89a70dc9
Installing APK: C:\Users\Nikhil\AndroidStudioProjects\ProfitKey\app\build\outputs\apk\app-debug.apk
Uploading file to: /data/local/tmp/helix.profitkey.hotelapp
java.io.IOException: An existing connection was forcibly closed by the remote host
I tried below
Kill and start adb
Invalidate and restart android studio
Removed adb process in the taskbar
Restarted the device and pc
Restarted studio, clean and rebuild
Taskbar have only one adb.exe
Updated the driver from device manager
Another device it is working. But previously both device worked fine for me.
Target device: motorola-xt1022-ZX1B33PRVP
Installing APK: C:\Users\Nikhil\AndroidStudioProjects\ProfitKey\app\build\outputs\apk\app-debug.apk
Uploading file to: /data/local/tmp/helix.profitkey.hotelapp
Installing helix.profitkey.hotelapp
DEVICE SHELL COMMAND: pm install -r "/data/local/tmp/helix.profitkey.hotelapp"
pkg: /data/local/tmp/helix.profitkey.hotelapp
Success
Edited:
I tried with two lenovo A6000. One is working and another is not working. Then, Moto is working and samsung galaxy is not working. Whenever I am killing and starting the adb. The task manager creating two adb first and after few seconds one was hiding. Was this a problem? But still some devices working fine.
adb starts automatically after killing by command or from the task manager if android studio is opened.
Now working for all the devices. Just I uninstalled the driver of mobile in PC and changed the port to connect with that device. I think some problem with the port in my PC. After long research it fixed by a small thing. It might be helpful to someone.
I also faced same problem,this was a just port problem,I was using computer front USB port ,just use computer back USB port and problem solved.
Restarting adb.exe worked for me. (For windows, Just Go to taskManager and kills the adb.exe process and re-deploy)
I also faced same problem, just change computer USB port and problem solved. or use genymotion emulator
I closed my virtual devices, opened windows task manager, and killed all adb.exe tasks -- there was one constant one and another that would appear then disappear. Aftwerwards, i started my virtual device and everything worked again.
Make sure that no other program is trying to take control of the ADB. You can check this by opening task manager, right clicking on any of the adb.exe, and opening the file location. Turns out that my HTC sync manager had it's own ADB and wanted to run it all the time. I uninstalled the program and haven't had issues since.
In my case, I had to change the USB debugging cable.
When I try to test my Android application with an android emulator as always I now suddenly get an error message. I'm working with Windows 8. So far I tried the following things which unfortunately could not solve the problem:
reinstalling eclipse with android adt
reinstalling java
installing "android studios" first solved the problem but after one day mysteriously also here adb, stopped working with the error message given in the title " ADB not responding ...
furthermore I unsuccessfully tried out some advice from Mr. Google:
Stopping adb.exe via task-manager and restarting eclipse / android studios
"adb kill-server" then "start-server" via command prompt
setting the path to adb.exe as an environment variable
switching off any antivirus or firewall
starting the IDEs as an administrator
updating the IDEs
The only thing I can remember doing which may have destroyed adb on my computer for all times: I connected my motorola smartphone to my laptop and installed the motorola usb drivers but as I said the adb also won't work with the emulator.
Any help would be kindly appreciated. The issue bothers me for more than an entire day now. Maybe someone had similar problems on Windows 8 ?
On OSX helped:
Close Android Studio
Kill all processess using 5037 port
sudo lsof -i |grep 5037
sudo kill PID_NUMBER
Run adb devices from console
adb devices
Meanwhile the emulator is working again. I cannot definetly say what solved the problem. What It could be a combination of two things:
Deleting the hidden ".android" folder under C:\Users...
(Probably there was some malfunctioning automatically created code)
Deleting and recreating the Path variable to the folder with adb.exe ( ...\sdk\platform-tools\;)
Finally it could be a Windows 8 issue which I don't understand.
Try this,
Open a command prompt with administration permission and type
netsh interface tcp set global autotuninglevel=disabled
This worked for me
Edit: Windows only
Kill the adb.exe with a command prompt. Open a command prompt were your adb.exe is located and type
adb kill-server
Maybe HTTP Proxy blocked the localhost 127.0.0.1:5037
If you have config the HTTP Proxy, make sure to exclude the localhost like picture below
Also, port can also be blocked by the firewall and anti-virus firewall, please notice as well.
Try this,
at the prompt try adb kill-server
Start one of your AVDs
at the prompt try adb root
The prompt should say adbd is already running as root.
That should fix it.
In case it helps anyone else, for me the problem was related with the USB hub that the tablet was plugged into on the computer (unplugging the webcam which was in use fixed it).
I got the same error. Don't worry. I have an solution. Go to Task Manager. Kill the process called adb.exe. You will find 2 or 3 processes. Kill all of them. You are done. It will work.
I have the same problems. Verify port 5037 is free and ports 5555 to 5585 are available and never used by another process.
"ADB server sets up connections to all running emulator/device instances. It locates emulator/device instances by scanning odd-numbered ports in the range 5555 to 5585"
FROM: http://developer.android.com/tools/help/adb.html
To find out which process is listening on a port on Windows yo can use:
C:> netstat -an -o
FROM: How can you find out which process is listening on a port on Windows?
I had the same problem, here is my simple fix:
-Go to task manager in windows, look for adb.exe, and kill it
-Go to command prompt, and tap adb devices ==> it will automaticaly start adb daemon
I finally just restarted the computer, and that solved the issue for me.
Uninstall HTC Sync. Or disable it somehow.
Try to open adb from command prompt from directory location as <sdk>\platform-tools,
If adb file is missing try to re-install Android SDK with latest version,
And try to run again..
I think issues will solved, by this procedure.
I saw this on a Mac OS X.
I shut down Android Studio and ran adb get-state in the terminal. When I started Android Studio back up, the warning had gone away.
BTW, I did just try restarting Android Studio without any luck. I am sure a restart of OS would have fixed it too.
The same thing with the Asus Sync utility (with the both our Transformer's 700 and 701).
I think there is a USB-port conflict between ABD driver and Sync utility.
Exit from Sync utility resolve the problem.
Looks like this could be caused by a bunch of different issues. This just happened to me because I had my android phone device plugged in for USB debugging, then after a few hours (and multiple android studio/phpstorm restarts) I had to do unplug the device manually. Things started working again after unplugging.
I have faced this problem few days ago. When I opened my task manager it showing me two adb runnig. It may be because of I am using mobogenie for connecting my android phone for debugging application. This problem is because of moboginie and adt port conflict. then I have followed following procedure to sort out this issue.
!) close eclipse
2) Go to task manager and kill all adb processes.
3) Now go to platform-tools in android sdk
4)press shift+right click mouse and select "open command window here" option
5) type
adb kill-server
adb start-server
6)if server sucessfully started then start eclipse and then connect your phone
(Remember dont connect your phone before starting eclipse)
Following works for me every time:
go to File->Invalidate Caches/Restart
select Invalidate and Restart
And, You are good to go.
This question already has answers here:
Eclipse error "ADB server didn't ACK, failed to start daemon"
(23 answers)
Closed 4 years ago.
I am a Android newbie. I guess I might be doing something stupid here. I have started the Virtual Device and I see that adbd daemon is running from the Terminal Emulator. When I run adb devices I get the following error:
C:\Program Files\Android\android-sdk\tools>adb devices
* daemon not running. starting it now on port 5037 *
ADB server didn't ACK
* failed to start daemon *
error: cannot connect to daemon
No other process is using port 5037. What am I doing wrong? Here are the packages I have installed -
1) Android SDK Tools, revision 10
2) Android SDK Platform-Tools, revision 3
3) SDK Platform Android 2.3.3, API 10, revision 1
This will occur normally,if abd is not able to launch properly and didn't exit when adb kill-server is executed.
So if in Windows
1. Go to Task Manager (CTRL+ALT+DEL)
2.look for adb.exe and end the process.
Now restart the emulator ,should work properly.
additionally you can close and launch the development environment also (eg: Eclipse or NetBeans).
I suspect the problem is cause of many adb instances (in windows) , i usually face this problem cause i don't turn off my system so the adb process may not end properly.
So open task manager choose Process tab just search for adb.exe, right click on it and choose End Process Tree rather than just End Process
Had the same problem, it seems that my security solution was blocking adb.exe
this is not the right folder for adb : lately adb has moved from /tools to /platform-tools in the sdk folder.
Seems like the security program is blocking adb.exe, so go to the adb file path and open adb's properties, then check the Run this program as administrator setting.
In my case the process adb.exe starts when i connect the phone, and then when I adb devices then I have your problem, and killing the process does not help it is resurrecting like a stubborn zombie, as long as the phone is connected.
so my solution was to disconnect the phone, then kill adb.exe process, then start it by adb devices and connect the phone
After that when i command adb devices i ma getting the same prompt about killing adb out of date, but this time on the second line is * daemon started sucessfully*
win xp
htc sensation
the new eclipse adt sdk bundle from google so i suppose up to date.
I found there was a process call "Tadb.exe" in Windows Task Manager.
I guess Tadb.exe is a similiar adb application of Tencent. Because I got an alert of "android device detected by QQ" after I install the last version of Tencent QQ2013 Beta5 (6970) yesterday.
After I killed the Tadb.exe, the original adb.exe of Android SDK works again.
You can see the detailed proecss to solve this problem here:
adb cannot run, adb server is out of date
I turned off the Windows Firewall and its working like magic. I am connected to the Internet through WiFi. If you are not behind a proxy and are still unable to access the Internet through a wireless link via the emulator, go to Device Manager and disable your LAN card.
As I have tried as follow by combining omni.present's method , and finally emulator works fine.
firstly I stop adb.exe process in the task manager
then I stop and start eclipse
The fundamental reason is because the 5037 port on your machine to be occupied by a process, not only Android devices can not use adb connection ios device not use iTunes.
Can query process and close it, netstat / a / o maybe can help you to take up to 5037 ports.
To windows7 the LogsAndAlerts service will occupy port 5037.