jBPM KIE Server Not Starting – Complete Troubleshooting Guide
Introduction The KIE Server is the core runtime component of jBPM , responsible for executing BPMN processes, DMN decisions, and rules. One of the most common production and local-setup issues developers face is: ❌ KIE Server fails to start or becomes unreachable This problem can occur due to configuration issues, dependency mismatches, port conflicts, database errors, or authentication misconfiguration . In this blog, we will walk through: Common symptoms Root causes Step-by-step troubleshooting Best practices to prevent future failures Common Symptoms You may encounter one or more of the following: KIE Server starts but shuts down immediately Server starts but /kie-server/services/rest/server returns 404 / 401 WildFly / EAP starts but KIE Server is not registered Containers fail to deploy Errors in startup logs related to KIE Server Step 1: Check Server Startup Logs (Most Important) Always start with the server logs . For WildFly / ...