Android LVL Signature Verification Failed Android LVL Signature Verification Failed

[Solved] Android LVL Signature Verification Failed

Introduction:

If you’re encountering the frustrating “Signature verification failed” message while implementing the APK Expansion Downloader Library into your Android application, you’re not alone. Many developers face this challenge despite having a properly signed application and using the correct public key. In this article, we’ll explore common reasons for this issue and provide solutions to help you overcome it.

Verify File Extension Versions:

One potential source of the problem could be related to having multiple versions of the file extension. Some developers have reported that the API sent them the name of an old file, causing the signature verification failure. As a workaround, you can modify the verification code to replace the version number, ensuring that the correct file is being referenced.

Clear Google Play Store Data:

Another effective solution involves stopping the Google Play Store app and clearing its data. This step can be performed through the “Manage apps” section on your device. It’s crucial to clear the data, not just the cache, as some users have reported success only after taking this specific action. After clearing the data, restart your licensed app and check if the licensing now works without the signature verification failure.

Conclusion:

Dealing with Android License Verification Library (LVL) issues can be challenging, especially when encountering a signature verification failure. By addressing potential problems with file extension versions and clearing Google Play Store data, you increase the likelihood of resolving the issue. Remember to double-check your public key, ensure proper naming of expansion files, and consider the mentioned solutions to make the implementation smoother. With these steps, you can overcome the hurdles and ensure a successful integration of the APK Expansion Downloader Library into your Android application.