Conversion to Dalvik format failed: Unable to execute dex SDK Tools 22.3

Question

Multiple dex files define Lcom/google/ads/AdRequest$ErrorCode

Latest ADT, Latest SDK Tools (22.3).

I Tried :

1. Clean/rebuild
2. Update Eclipse

Answer 1

Eclipse project properties->Java build path->Order and export

Uncheck Android private libraries.

Do not use jar file and library project together of google play service lib in your project.