If your app was originally published using APK, when you try to create a new release, and upload an App Bundle file ".aab", you will receive following error message:
"The Android App Bundle was not signed."
"In order to upload an Android App Bundle, you must enroll in Play's App Signing program."
To Fix this error, all you have to do is to continue uploading ".apk", show in screenshot below:
![1694775659170.png 1694775659170.png](https://appyet.com/forum/data/attachments/2/2479-206f5b4d209ab055438b8d00cf931157.jpg)
"The Android App Bundle was not signed."
"In order to upload an Android App Bundle, you must enroll in Play's App Signing program."
To Fix this error, all you have to do is to continue uploading ".apk", show in screenshot below:
![1694775659170.png 1694775659170.png](https://appyet.com/forum/data/attachments/2/2479-206f5b4d209ab055438b8d00cf931157.jpg)
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