Android Studio TransformException : Error:Execution failed for task ':app:transformClassesWithDexForDebug'

Question

I am getting the exception below when I am trying to run the application using Android Studio:

Error:Execution failed for task \':app:transformClasses

Answer 1

Just fixed this issue. In my case, rebuilding the project helped for me. So, try to rebuild your project.

Answer 2

in my case - Clean Project and Rebuild

Answer 3

For me closing all other Android Studio solved the problem.

I had opened 3 android studios when I was getting the error, after I closed 2 I didn't get any error.

No need to add any code related to multiDex !

Seems like there was some memory issue related to jvm.

Answer 4

At my case change buildToolsVersion from "24" to "23.0.2", solve the problem. This will solve the problem especially if you're using old Android Studio less than version 2.