Entry name 'classes.dex' collided

AndroidAndroid StudioSigned Apk

Android Problem Overview

While trying to Generate a singed apk I'm getting this error

Entry name 'classes.dex' collided

Can someone tell me how to solve it? I recently changed the default package name which was com.exmaple to my app's name. It builds correctly but gives this error while trying to generate a signed APK

My android studio version is 4.1.2

Please let me know if you need more information and I will update the question accordingly

Android Solutions

Solution 1 - Android

You are probably facing this error because you already have a signed APK in your project's "release" folder. Please check for any existing APK and delete it, then try to generate once more.

Solution 2 - Android

I had the same problem and here's how I solved it easily:


 1. Build -> Clean Project
 2. Build -> Generate Signed Bundle / APK..

Solution 3 - Android

Delete Your Old Signed APK from your App folder and then Generate Signed APK

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Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionSanjid ChowdhuryView Question on Stackoverflow
Solution 1 - AndroidTanzim ChowdhuryView Answer on Stackoverflow
Solution 2 - AndroidFélix MaroyView Answer on Stackoverflow
Solution 3 - AndroidVibhu Vikram SinghView Answer on Stackoverflow