How to Fix INSTALL_PARSE_FAILED_NO_CERTIFICATES Error When Installing APK on Android

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Summary: Learn how to fix the INSTALL_PARSE_FAILED_NO_CERTIFICATES error when installing an APK on your Android device by properly handling certificates and ensuring correct configuration.
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How to Fix INSTALL_PARSE_FAILED_NO_CERTIFICATES Error When Installing APK on Android

Installing an APK file on an Android device can sometimes be fraught with errors, one of the more common being the INSTALL_PARSE_FAILED_NO_CERTIFICATES error. If you’re an Android developer or an advanced user, coming across this error can be quite frustrating, especially if you’re not entirely sure where to start troubleshooting. In this guide, we’ll help you understand what causes this error and provide a step-by-step guide to fix it.

What Causes INSTALL_PARSE_FAILED_NO_CERTIFICATES?

This error usually indicates that the APK file lacks the proper certificates or that the existing certificates are not correctly signed. When the Android system tries to parse the APK and install it, it checks for a valid signature. If it doesn't find one, it throws the INSTALL_PARSE_FAILED_NO_CERTIFICATES error.

There are several reasons why this may occur:

Unsigned APK: The APK is not signed at all.

Incorrectly signed APK: The APK is signed, but the signing process wasn't completed properly.

Corrupt APK file: The APK file might be corrupted, causing Android to fail in verifying the certificates.

Steps to Fix INSTALL_PARSE_FAILED_NO_CERTIFICATES

Verify APK Signature

The first step is to check if your APK is signed. You can use tools like apksigner or jarsigner to verify the signature of your APK. This can be done using the command line:

[[See Video to Reveal this Text or Code Snippet]]

This command will check if the APK is signed and display certificate information if it is.

Sign Your APK

If your APK is unsigned, you will need to sign it. You can use Android Studio to sign your APK. Here’s how you can do it:

Open Android Studio and go to Build -> Generate Signed Bundle / APK.

Choose either Android App Bundle or APK and click Next.

Create a new keystore or choose an existing one.

Enter the required information and click Next.

Select the build variants and click Finish.

This should generate a signed APK or App Bundle.

Double Check Your Build Configuration

Make sure your build.gradle file has the signing configuration properly set. Here is an example of what it might look like:

[[See Video to Reveal this Text or Code Snippet]]

Check AndroidManifest.xml

Your AndroidManifest.xml should not contain any invalid or duplicate entries that may cause the parsing to fail. Ensure all necessary permissions and components are correctly declared.

Ensure APK Integrity

Sometimes, APK files may become corrupted during transfer. Make sure to download the APK file properly or rebuild it if you suspect corruption.

Conclusion

Fixing the INSTALL_PARSE_FAILED_NO_CERTIFICATES error involves verifying and signing your APK correctly. By carefully following these steps to sign your APK and checking your configurations, you can overcome this error and successfully install your application on an Android device. Good luck, and happy coding!