## How to Resolve \"PKIX Path Building Failed: Unable to Find Valid Certification Path to Requested Target\"?

PKIX Path Building Failed: Unable to Find Valid Certification Path to Requested Target

Your client is encountering the error "PKIX path building failed: unable to find valid certification path to requested target" when trying to establish an HTTPS connection. This typically indicates a problem with certificate validation.

To resolve this issue, perform the following steps:

1. Check if the Service Certificate is Valid: Ensure that the server certificate presented by the HTTPS service is valid and up-to-date. Verify its expiration date and issuer.
2. Install Intermediate CA Certificates: If the service certificate is signed by an intermediate certificate authority (CA), you need to install the intermediate CA certificates in the Java truststore.
3. Set the Keystore for Trust Verification: Use the System.setProperty() method to specify the path to the truststore containing the service certificate and intermediate CA certificates:

<code class="Java">System.setProperty("javax.net.ssl.trustStore", "clientTrustStore.key");
System.setProperty("javax.net.ssl.trustStorePassword", "qwerty");</code>

4. Create a Client Keystore for IE and Firefox: Browsers like IE and Firefox use their own certificate stores. Consider creating a client keystore specific to the Java client, which can be referenced using the ClientKeyStore property in the TLS configuration.

Note: Specific certificate requirements may vary based on the HTTPS service you are accessing. Consult the service documentation or contact the service provider for further guidance.

The above is the detailed content of ## How to Resolve \"PKIX Path Building Failed: Unable to Find Valid Certification Path to Requested Target\"?. For more information, please follow other related articles on the PHP Chinese website!