give some value for your sd card. may be something like 100 or 200


for those posting that we need to set the sdcard size: i tried that and many other settings, and none of that helps. i get the noclassdeffound exception mentioned by mogilka, in the error view. no configuration settings are going to fix that. it seems a bad update was pushed



i was able to create an avd successfully after clicking ok several times and modifying some of my settings as a test.

i tried yashwanth krishnan solution and tried to open the avd manageer.exe directly without success. the manager will not open directly for me on windows 8 x64. it tries to open, then shuts down immediately...


i met this issue too . the issue occurs in the latest version 22.6 which was released in march . meanwhile i did the testing in 22.3 , the issue was not found .

so that i suggest that rollback the adt to 22.3 and wait the new fix for 22.6


i banged my head on this for several hours until i found out that the default location was c:\username path\sdks or something, where android was installed on my system to d:\sdks\android_sdk_windows. so, changing the eclipse android directory to d:\sdks\android_sdk_windows fixed it.

i also heard that it may help things if you install the android sdk to a path without spaces.

hope this helps someone keep some hair.


today i ran into the same problem after installing maven. i messed around with different path settings to get it to work and i ran into issues. i was also trying to install the google server for gcm. somewhere in what i was doing i corrupted the android virtual device manager. i searched s.o. for an answer, then i decided to follow the first rule of techsupport. i reinstalled the tool kit!

i went into the sdk manager and i uninstalled the tools (by clicking the tool checkbox). it took several minutes to delete them all. then i reinstalled the tools which took about ten minutes. i rebooted eclipse and the avd and worked just like it did yesterday!

this time it only took a total of twenty minutes to fix.


per the release notes, this problem has been resolved in revision 22.6.1, which is now available for download.

updated your android sdk tools to 22.6.1 in eclipse by selecting window > android sdk manager and follow the prompts to install the update.

after that update finishes, select help > check for updates and follow the prompts to update the appropriate eclipse components.

after completing these updates, i tested the avd functionality and it appears to be working properly.


i just copied the avds from a different system as descriped here: android - how to copy the emulator to a friend for testing


i faced the similar issue. i am using 23.0.2 version of android sdk.

"ok" button was disabled, but then i went to the path where android sdk was installed. in my case:

c:\program files\android\android-sdk\

and executed avd-manager.exe by right clicking and selecting run as an administrator, and it worked like a charm.


sometimes the avd cannot be created because of this following error while starting: x86 emulation currently requires hardware acceleration!

i was also facing this same issue. if u are facing the same, then it can be resolved by opening sdk manager -> under extra -> installed "intel x86 emulator accelerator (haxm installer). then when creating the avd, select the proper cpu. this should work. :-)


update and solution: asyashwanth krishnan said, the bug in question is now fixed in later versions. i tried adt 222.6.1 and adt 22.6.2 , and they did not suffer from the bug of not not being able to create or edit android virtual devices. the direct solution is to update you adt to latest version, the workaround written below is left only for historical purposes.

historical workaround as @yashwanth krishnan said, this is a bug in adt plugin 22.6; so best workaround is to rollback. for those asking how to rollback, here is a step-by-step guide:

first: uninstall adt plugin and all related plugins for android: help->about enter image description here installation details enter image description here select android plugins and press uninstall button enter image description here enter image description here enter image description here enter image description here restart

second: download adt 22.3.0 archive from

and install it enter image description here add repository from archive on local disk enter image description here enter image description here enter image description here select android plugins enter image description here


1 minute solution

i used a quick workaround where i cloned a device that already existed. the clone button worked and i was able to successfully edit the clone.


select a device by google

enter image description here

click the "clone..." button

enter image description here

a window will pop up, click "clone device"


select the newly cloned device, it should say "... by user"

enter image description here

click the "edit" button on the side

enter image description here

there you have it, you now have your own custom virtual device

enter image description here


to elaborate on the statement "i can create/edit avds if i run the avd manager from outside eclipse" in the op:

run the following on the command line

<android-sdk-location>/tools/android avd (on linux in this case)

this launches the same avd window you see when you click the avd manager icon in the eclipse toolbar. but this instance of the avd manager does not have the bug, and you can create and run emulators as you did before the bug was introduced.


this is a possible workaround for bugs in adt 22.6.0 only, these bugs subsequently fixed in following builds

download and install new adt v22.6.1 from here (zip) or use sdk manager to update

seems like some bug from google side, this problem found after "adt 22.6" update. widely reported on "android open source project - issue tracker" and nobody properly answered it yet.

however i was partially successful to create an avd by opening "avd manager.exe" from "android sdk" for creating new avd try to open directly avd manager.exe in sdk folder.

may be we have to wait for any conformation from android community

worked for me, sort of.. .

(windows 8.1 pro 64 bit, java jdk 1.7 update 25, eclipse standard kepler service release 1, android development toolkit 22.6.0.v201403010043-1049357)

update 1

further research revealed that launching avd manager from sdk manager (tools --> manage avds...) also works without any problems.

update 2

more bad news is avd creation not working from command line tool too.

update 3

assuming some parameter passed during launching avd manager from eclipse causes these problems

update 4

updated java to jdk 1.7 update 51 and eclipse standard sdk to kepler service release 2 their latest and no resolution to the problems. also tested under debian and same results obtained.

update 5

at android project members conforms the problems and promises to fix by upcoming versions of adt (22.6.1 - 22.6.3). at the mean time i would suggest to roll-back adt to a lower version version 22.3.0

to uninstall current adt go to

help --> about eclipse --> installation details --> android development tools --> uninstall

i may suggest uninstalling whole packages from android (ddms, hierarchy viewer, ndt, traceview, opengl es..etc..) to avoid any possible compatibility issues and install a fresh new adt from above link through archive installation method.

hope this will solve this problem temporarily. and wait for new release of adt here.

update 6

new adt, version 22.6.1 is out now which will solve these problems

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