Coding⏱️ 2 min read📅 2026-05-31

How to Fix: Upload new APK to Alpha - failed

Invalid APK signature error when uploading to Alpha; fix by adding JAR signatures.

Quick Answer: Add a JAR signature to your APK using apksigner.

The error 'Upload new APK to Alpha - failed' indicates that the APK uploaded does not have a valid signature, which is required for Android application distribution. This issue can be resolved by ensuring that your APK has a properly configured signing certificate.

🛑 Root Causes of the Error

  • The APK does not have a valid signature.

🔧 Proven Troubleshooting Steps

Method 1: Verifying the APK Signature

  1. Step 1: Open a command prompt or terminal and navigate to the location of your APK file.

Method 2: Using apksigner to Resolve Signature Issues

  1. Step 1: Use the apksigner tool to verify and repair the APK signature. Run the command `apksigner verify --verbose .apk` to diagnose any issues.

🎯 Final Words

By following these steps, you should be able to resolve the 'Upload new APK to Alpha - failed' error and successfully upload your APK for distribution.

Did this fix your problem?

If not, try searching for specific error codes.

🔍 Search Error Database

❓ Frequently Asked Questions