“waiting for target device to come online” in Android Studio 2.3

Question

Recently upgraded to Android Studio from 2.2.3 to 2., running on Win10

Emulator stopped working since then. Tried installing other images(25 rev 4)/upgrading for AVD

Answer 1

I deleted all my AVD files and recreated an AVD.

• (In windows), delete all files in C:\Users\MyName\.android\avd\
• Android Studio > Tools > AVD Manager > Create Virtual Device ...
• etc.

At this point in time I was on Win10, Android Studio 3.1.2

Answer 2

Setting the system variable ANDROID_SDK_ROOT to the path used by Android studio solved the issue for me:

• In Android Studio fire up Tools>Android>SDK Manager, navigate to Appearance & behavior>System Settings>Android SDK

• Copy the path from "Android SDK Location"

• Add ANDROID_SDK_ROOT to your system variables and assign the path

• Restart Android Studio

Answer 3

if you docker is running you should close it.

Answer 4

I had the same problem ,I was using

Linux LinuxRobot 4.14.0-kali3-amd64

and getting this

host doesn't support requested feature: CPUID.80000001H:ECX.abm

and this message

waiting for target device to come online

Solution Close debugging and current emulator then

Open Avd Manager ,you will be able to see your device there then click on play button

Or Try Cold Boot

Open Android virtual device manager,click on drop button after select cold boot. read this

Answer 5

After trying Cold Boot and other stuff, I removed Android Emulator from SDK Tools, and then reinstalled. But first, I reinstalled HAXM too, because I recalled that I had an error message when installing by first time.

To install HAXM I had to disable Hyper-V on Windows 10, basically running:

bcdedit /set hypervisorlaunchtype off

like stated here: https://github.com/intel/haxm/issues/105#issuecomment-430484231

After that, I reinstalled Android Emulator. It's just unchecking the box, applying the change, checking it again and applying the change. But you can follow more detailed steps here: https://www.technipages.com/android-emulator-stuck-waiting-for-target-to-come-online

After that, I have my AVD running.

Answer 6

I realized my emulator was actually frozen, despite restarting it and restarting my computer. I just had to wipe data (AVD Manager > right-click on emulator > Wipe Data) and it started working again. You'll lose any state you had, but at least you won't have to reinstall it.