Java: Sun.security.provider.certpath.suncertpathbuilderexception: Unable To Find Valid Certification Path To Requested Target

This exception occurs when Java is unable to locate a valid certification path to the target server or website.

There are several potential causes for this error:

  1. The SSL/TLS certificate of the target server is not trusted by the Java Runtime Environment (JRE) or the truststore being used. This can happen if the certificate is self-signed or issued by an unknown or untrusted Certificate Authority (CA).

  2. The target server’s certificate chain is not properly configured or missing intermediate certificates. In this case, the certificate chain is incomplete, and Java cannot establish trust.

  3. The truststore being used by Java does not contain the necessary root or intermediate certificates to establish a trust relationship with the target server’s certificate.

To resolve this issue, you can consider the following solutions:

  1. Import the target server’s SSL/TLS certificate into the truststore being used by Java. You can use the keytool command-line tool (provided with Java) to import the certificate. For example:

    keytool -import -alias mycert -keystore <path/to/truststore> -file <path/to/certificate>
    
  2. If the target server is using a self-signed certificate, you can create your own truststore and include the server’s certificate in it. Then, specify this custom truststore using the JVM system property javax.net.ssl.trustStore when running your Java application.

  3. Ensure that the server’s certificate chain is properly configured and all necessary intermediate certificates are included. If there are any missing intermediate certificates, contact the server administrator to provide them.

It’s important to note that importing an untrusted or self-signed certificate compromises security, as it bypasses the normal certificate validation process. Use this solution with caution, and consider obtaining a trusted certificate from a recognized CA if possible.

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!