Adb server not responding [duplicate]

Question

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

Answer 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).

Answer 2

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

Answer 3

Had the same problem, it seems that my security solution was blocking adb.exe

Answer 4

this is not the right folder for adb : lately adb has moved from /tools to /platform-tools in the sdk folder.