Hi Christian, I'm trying to build a web based frontend with Angular(2) with Basex as backend. Since Angular uses localhost:3000 and basex uses localhost:8984 I need CORS to be activated in the bachend's jetty-service. If I try to activate this by editing the web.xml file I get the message from the jetty that this service is not available. Obviously version 8 of jetty does not support CORS. According to the documentation Jetty 9 should support CORS. Is replacing jett 8 with version 9 somewere on the agenda? Or can I do this myself? (new area for me) I wouldn't mind testrunning it. TIA, Rob Stapper PS. I see the request the request being handled and send back by the backend (basex) but it misses the necessary header. Debugging my Angular app in the browser say that CORS-header is missing.