“pkix Path Building Failed” And “unable To Find Valid Certification Path To Requested Target”

These errors usually occur in Java when the SSL/TLS connection to a target server cannot be established due to invalid or missing certificates in the truststore. Here is a possible solution to resolve these errors:

  1. Identify the source of the error: The "PKIX path building failed" error indicates that the trust path to the target server’s certificate could not be validated, while the "unable to find valid certification path to requested target" error suggests that the target server’s certificate is not trusted.

  2. Obtain the target server’s SSL certificate: You can use a web browser to access the target server and export its SSL certificate. In most browsers, you can click on the padlock icon near the URL to view the certificate details and export it as a ".cer" or ".pem" file.

  3. Install the certificate in the truststore: The truststore in Java contains trusted certificates. You need to import the server’s SSL certificate into this truststore.

First, locate the truststore file. The default truststore file is usually named "cacerts" and is located in the "lib/security" folder of your Java installation directory. You can use the following command to find it:

keytool -list -keystore <path-to-truststore>

Enter the password for the truststore when prompted (the default password is usually "changeit").

  1. Import the certificate into the truststore: Use the keytool command-line tool to import the certificate into the truststore. Run the following command, replacing <path-to-truststore> with the actual path and <certificate-file> with the path to the exported certificate file:
keytool -import -trustcacerts -keystore <path-to-truststore> -alias <alias> -file <certificate-file>

You will be prompted for the truststore password and confirmation to add the certificate. You may need to provide a unique alias for the certificate.

  1. Verify the import: Run the list command again to verify that the certificate has been imported successfully:
keytool -list -keystore <path-to-truststore>
  1. Restart the Java application: After importing the certificate, restart your Java application to ensure that it uses the updated truststore.

These steps should resolve the "PKIX path building failed" and "unable to find valid certification path to requested target" errors by adding the target server’s SSL certificate to the truststore, allowing Java to establish a secure connection.

About the Author Rex

I'm a passionate tech blogger with an insatiable love for programming! From my early days tinkering with code, I've delved into web dev, mobile apps, and AI. Sharing insights and tutorials with the world is my joy, connecting me to a global community of like-minded tech enthusiasts. Python holds a special place in my heart, but I embrace all challenges. Constantly learning, I attend tech conferences, contribute to open-source projects, and engage in code review sessions. My ultimate goal is to inspire the next generation of developers and contribute positively to the ever-evolving tech landscape. Let's code together!