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The connection to adb is down, and a severe error has occured.You must restart adb and Eclipse.Please ensure that adb is correctly located

I know this question is asked multiple time and there are some alternative answer also.So please don't close with some other link because i have added that link below.
[2014-01-23 16:19:44 - adb] ADB server didn't ACK
[2014-01-23 16:19:44 - adb] * failed to start daemon *
....
....
[2014-01-23 14:48:10 - My App] The connection to adb is down, and a severe error has occured.
[2014-01-23 14:48:10 - My App] You must restart adb and Eclipse.
[2014-01-23 14:48:10 - My App] Please ensure that adb is correctly located at 'E:\Chintan Khetiya\Android KIT\adt-bundle-windows-x86_64-20130522\adt-bundle-windows-x86_64-20130522\sdk\platform-tools\adb.exe' and can be executed.
Some of the grate Answer
Kill from Task Manager - In this case i am not able to delete my process. When i just delete it will automatically create new.(showing me more the one adb in task manger)
Kill from ADB - This works me some times but I have to do this process at least two or three times. So at least i have to restart my eclipse two or three times minimum and its very time consuming.
Copy /Platform-Tool to /Tool- I don't know but i have tried this one also.
Finally I am looking for some solution in which i can solve this issue because i am facing this issue at least four times in a day so i am irritate now to restart again and again. I am wasting my 1 hours for this issue in a day.
Anyone have some permanent solution for my issue.?
I don't know why this error showing me in console.
System Requirements:
Operating System - Windows - 7
Processor - Core 2 Duo
RAM - 4 GB
Android SDK - Up to - 4.4.2 - 19 API level (All most latest)
Environment Path:
E:\Chintan Khetiya\Android KIT\adt-bundle-windows-x86_64-20130522\adt-bundle-windows-x86_64-20130522\sdk\platform-tools;
E:\Chintan Khetiya\Android KIT\adt-bundle-windows-x86_64-20130522\adt-bundle-windows-x86_64-20130522\sdk\tools
Thank you.

I Face this problem many time i solve in my way like this and it is working
First of all Close your eclipse .
Then End Process of adb.exe from Task Manager.
Then in command line go to your directory of platform-tools like
C:\AndroidSetup\sdk\platform-tools>
Then write following command step by step
C:\AndroidSetup\sdk\platform-tools>adb kill-server
C:\AndroidSetup\sdk\platform-tools>adb start-server
After successfully message come your adb is running now .
Now you can start your eclispe your.
Hope your adb is runnig now.

Below steps worked for me.
Close the Eclipse if running
Go to the Android SDK platform-tools directory in Command Prompt
Go to Tak manager and kill adb.exe
From command prompt type adb start-server
If No error message is thrown while starting ADB server, then adb is started successfully.
Now you can start Eclipse again. Restart phone.

I had face this problem and got solution too.
Follow these steps after close your adt -
1.Re install java I will suggest jxpiinstall to be install
2. Execute that file adb.exe
3. Set the envirnoment path again
4. And Here you can have your working adt
I hope this will help you.

add the path to SDK tools and platform tools in your classpath from
Environment Variables. Then restart Eclipse.

Kill adb.exe from task manager and restart Eclipse. It worked for me.

Along with the above all suggested answer try this one also, it worked for me
copy the hprof-conv.exe from C:\adt\sdk\tools to C:\adt\sdk\platform-tools
and
copy the adb.exe from C:\adt\sdk\tools to C:\adt\sdk\platform-tools

Ok I solved my issue. I go to Task Manager in windows7 -> processes -> selected the adb.exe -> End Process. After that I go to cmd prompt and type adb start-server. This time adb statred succefully. I run eclipe and it was showing no error.

Close your Eclipse
Go to your adb.exe in my case it is located at
C:\Program Files (x86)\Android\android-sdk\platform-tools
click on adb.exe
Start Eclipse and Happy Coding

The connection to adb is down

I am trying to run an android application I build in the android emulator using eclipse , but every time I try I get the following error:
[2013-11-30 14:14:12 - MyFirstApp] The connection to adb is down, and a severe error has occured.
[2013-11-30 14:14:12 - MyFirstApp] You must restart adb and Eclipse.
[2013-11-30 14:14:12 - MyFirstApp] Please ensure that adb is correctly located at 'C:\<sdk directory>' and can be executed.
I tried adb kill-server and adb start-server, searched Stack Overflow , found this
and this, tried everything , but still can't get to start the application.
The AVD starts but the app doesn't start on AVD.
Then after some waiting,
[2013-11-30 14:26:54 - MyFirstApp] Failed to install MyFirstApp.apk on device 'emulator-5554!

Your error it self saying :You must restart adb and Eclipse.
Try this once:
Step1. Go to DDMS perspective
Step2. Click on emulator opened at Devices tab
Step3. Click view Menu on reset adb as shown bellow image
Step4. Restart Eclipse.
May it helps you.

Just restart your Eclipse and device or emulator which you are using for testing apps and go to task manager find adb.exe -> End Task.
You will not find any error after that.

how to fix? I can't run my application its cancelled

I have always getting the below error while run my application.
I tried all solution through google. Still i didn't able to fix my solution.
I restart my eclipse and delete the AVD and create it again and done reset adb also.
Still in getting this error
Failed to install Final.apk on device 'emulator-5554!
(null)
Launch canceled!
I can't able to start my homescreen. What is the solution for this?

Try executing
adb kill-server
adb start-server
in command prompt from /platform-tools folder in your android-sdk.
Then try launching the application after you see *daemon started successfully*.

could not access the package manager. is the system running while installing android application

While installing the android application in the emulator I am getting the following error.
Please help me to resolve this error.
Error message:
emulator.exe -avd avd_name
adb wait-for-device
adb install path-to.apk
could not access the package manager. is the system running while installing android application....

You need to wait for the emulator to full start - takes a few minutes. Once it is fully started (UI on the emulator will change), it should work.
You will need to restart the app after the emulator is running and choose the running emulator when prompted.

As other have said, this error occurs because the emulator is still in the process of launching. An attempt to access the package manager, for the device, at this time causes an error.
It's just a simple timing issue. Here are the steps to avoid this error:
Wait until the emulator 'lock screen' is showing.
Run the 'app' again (^R in most IDE's).
Choose the running device (Should be the same emulator).
App should install without error.

In my case it was just that the emulator took 9 minutes to start. Wait until you see the lock icon on the emulator LCD. Or use actual tablet or phone.

Facing Same issues following Link helped solving the problem. The above solutions were not helpful for me.
deployment-failed-could-not-access-the-package-manager-is-the-system-running
By restarting server using CMD application was back to work. Open cmd (Run as administrator), open this
cd C:\Program Files (x86)\Android\android-sdk\platform-tools
(this path must specify your android-sdk installation folder )
Now, first write,
adb kill-server and then adb start-server.

Kill the process/server and restart it.! It worked.

You can avoid the error by setting default device before launching application. Launch the AVD before starting the app.

Once you see this error, wait for emulator to show lock screen. And then relaunch the app in your IDE and check the emulator again. It works for me always.
In Android studio, you can relaunch by clicking the green play button or ctrl + r.

If this error is gotten when using a rooted device's su prompt and not from emulator, disable SELinux first
setenforce 0
You may need to switch to shell user first for some pm operations
su shell
then re-run your pm command.
Same applies to am commands unavailable from su prompt.

The solution for me was to restart the IDE. I suspect that a slow emulator was hiding from view, blocking installation on my device.

Check your project build is in Debug mode not Release, I had some problem for debugging always I forget to change Release mode to Debug (Xamarin Users)

Why I cannot compile source code on my phone?

After I clicked run it shown as below
[2011-02-23 22:12:06 - cas1] Uploading cas1.apk onto device '100082d63935'
[2011-02-23 22:12:15 - cas1] Failed to install cas1.apk on device '100082d63935': timeout
[2011-02-23 22:12:15 - cas1] Launch canceled!
Please help me solve this problem

Is it an actual device or emulator? Is the app already installed from the market? If you should uninstall the market version. If its the emulator, that happens to me occasionally and restarting the emulator and waiting until the home screen appears usually fixes it.

Try issuing the command "adb kill-server" from the command line and then "adb devices" to start it back up again. Then try to deploy your apk again. I've had issues deploying to the Honeycomb emulator from Eclipse and the above fixed it.
Finally, if this doesn't work try installing the apk from the command line using adb install -r [your_apk].