Unable to execute dex: Multiple dex files define Eclipse Android

Try each step separately:

  1. Restart Eclipse
  2. Clean project and rebuild
  3. Create a new project and try it if the problem persists, if no move copy project to other folder, delete project from workspace , create new project same name and copy java, xml etc. files to new project
  4. Close Eclipse, backup folder c:\Users\myName\workspace\.metadata and delete it. Restart Eclipse try again import project to workspace
  5. Re-installing the Android Developer Tools
  6. Re-installing Eclipse – rename old folder with Android to Android_old, create new folder C:\Program Files\Android and copy new Eclipse with sdk into new folder
  7. Created a new project importing from the file system
  8. Created a new project from subversion
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