(Sorry, it is not really an issue) Well, not everybody likes it to have it in an embedded Tomcat. I struggled quite a while to get it running in Payara 5.201 (dockerized). Maybe, someone is interested in how I finally got it working. First of all, you will need a file demoapp/src/main/webapp/WEB-INF/web.xml where you define a listener. Then a filter element with filter-name 'myFilter' and an element filter-mapping with filter-name 'myFilter'. Second, in the pom, a dependency element with groupId 'com.fasterxml.jackson.dataformat' and artifactId 'jackson-dataformat-xml' helps getting rid of a WARNING while Payara is starting up (and the demoapp is not working). Third, in a file demoapp/src/main/webapp/WEB-INF/payara-web.xml you better have to define an element class-loader with an attribute delegate set to 'false'. See attachment. [descriptors.zip](https://github.com/FusionAuth/fusionauth-example-spring-security/files/5598246/descriptors.zip)