All the Spring integration xsds (-jms, -jmx, -file) import the core xsd by using https in schemaLocation while in the spring-integration-core\spring.schemas it is defined with http. In runtime this causes the system to look for the https://www.springframework.org/schema/integration/spring-integration-4.3.xsd on the web. Looks the same as https://github.com/spring-projects/spring-framework/issues/22739