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I was up to publish my app in the Google Play Store and wanted to do a last check if it works after I generated the signed APK. However, I got the following error.

Any solution?

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':android:packageRelease'. at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) at java.lang.Thread.run(Thread.java:745) Caused by: org.gradle.tooling.BuildException: Failed to read key shaperecognisingreleasekey from store "C:\Users\Albrecht\Documents\Apps\ShapeRecognisingGame\android\release\android-release.apk": Invalid keystore format at com.android.build.gradle.internal.scope.BuildElements$ExecutorBasedScheduler$transform$2.invoke(BuildElements.kt:133) at com.android.build.gradle.internal.scope.BuildElements$ExecutorBasedScheduler$transform$2.invoke(BuildElements.kt:110) at kotlin.sequences.SequencesKt___SequencesKt$onEach$1.invoke(_Sequences.kt:1260) at kotlin.sequences.TransformingSequence$iterator$1.next(Sequences.kt:149) at kotlin.sequences.FilteringSequence$iterator$1.calcNext(Sequences.kt:109) at kotlin.sequences.FilteringSequence$iterator$1.hasNext(Sequences.kt:133) at kotlin.sequences.TransformingSequence$iterator$1.hasNext(Sequences.kt:153) at kotlin.sequences.SequencesKt___SequencesKt.toCollection(_Sequences.kt:633) at kotlin.sequences.SequencesKt___SequencesKt.toMutableList(_Sequences.kt:663) at kotlin.sequences.SequencesKt___SequencesKt.toList(_Sequences.kt:654) at com.android.build.gradle.internal.scope.BuildElements$ExecutorBasedScheduler.transform(BuildElements.kt:140) at com.android.build.gradle.internal.scope.BuildElements$ExecutorBasedScheduler.into(BuildElements.kt:115) at com.android.build.gradle.internal.scope.BuildElementActionScheduler.into(BuildElementActionScheduler.kt:32) at com.android.build.gradle.tasks.PackageAndroidArtifact.doFullTaskAction(PackageAndroidArtifact.java:393) at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:106) Caused by: com.android.ide.common.signing.KeytoolException: Failed to read key shaperecognisingreleasekey from store "C:\Users\Albrecht\Documents\Apps\ShapeRecognisingGame\android\release\android-release.apk": Invalid keystore format at com.android.ide.common.signing.KeystoreHelper.getCertificateInfo(KeystoreHelper.java:212) at com.android.build.gradle.internal.packaging.IncrementalPackagerBuilder.withSigning(IncrementalPackagerBuilder.java:161) at com.android.build.gradle.tasks.PackageAndroidArtifact.doTask(PackageAndroidArtifact.java:646) at com.android.build.gradle.tasks.PackageAndroidArtifact.splitFullAction(PackageAndroidArtifact.java:496) at com.android.build.gradle.tasks.PackageAndroidArtifact.lambda$doFullTaskAction$2(PackageAndroidArtifact.java:388) at com.android.build.gradle.internal.scope.BuildElements$ExecutorBasedScheduler$transform$$inlined$forEach$lambda$1.call(BuildElements.kt:121) at com.android.build.gradle.internal.scope.BuildElements$ExecutorBasedScheduler$transform$$inlined$forEach$lambda$1.call(BuildElements.kt:110) at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinTask.externalAwaitDone(ForkJoinTask.java:326) at java.util.concurrent.ForkJoinTask.doJoin(ForkJoinTask.java:391) at java.util.concurrent.ForkJoinTask.join(ForkJoinTask.java:719) at com.android.ide.common.internal.WaitableExecutor.waitForAllTasks(WaitableExecutor.java:215) at com.android.build.gradle.internal.scope.BuildElements$ExecutorBasedScheduler.transform(BuildElements.kt:125) Caused by: java.io.IOException: Invalid keystore format at sun.security.provider.JavaKeyStore.engineLoad(JavaKeyStore.java:658) at sun.security.provider.JavaKeyStore$JKS.engineLoad(JavaKeyStore.java:56) at sun.security.provider.KeyStoreDelegator.engineLoad(KeyStoreDelegator.java:224) at sun.security.provider.JavaKeyStore$DualFormatJKS.engineLoad(JavaKeyStore.java:70) at java.security.KeyStore.load(KeyStore.java:1445) at com.android.ide.common.signing.KeystoreHelper.getCertificateInfo(KeystoreHelper.java:190)
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  • Looks like your keystore is broken. Do you have a backup? Commented Sep 19, 2018 at 19:56
  • I´m sorry, but could you explain me what is meant with backup in this context? Commented Sep 20, 2018 at 4:31
  • A backup. A copy. of your keystore. That contains your signing keys. Which you really really really really really really need to protect. Commented Sep 20, 2018 at 6:24
  • To see if it works you just copy the signed APK to your device and install it. Or you can use adb install name-of-my-app.apk Commented Sep 20, 2018 at 6:29

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It looks like it is trying to use the APK file as the keystore:

Caused by: org.gradle.tooling.BuildException: Failed to read key shaperecognisingreleasekey from store "C:\Users\Albrecht\Documents\Apps\ShapeRecognisingGame\android\release\android-release.apk": Invalid keystore format at

You told your build tool that the APK was the keystore. You need to go back and read the instuctions about how to generate a keystore and make sure that you tell the build tool where your keystore is. Also make absolutely sure that you have backup copies of your keystore and that you know what the password is. If you lose your keystore or you forget your password, you will never be able to update your app on Google Play.

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