I am facing the famous CORS issue when making post calls from my java script to the Thingworx Server. To be specific, this is the error message: "...has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource."
I tried to add the CORS filter to the tomcat web.xml as described in this thread and I am still facing this problem. I am using the Trial-Version for Thingworx by the way.
Any ideas what could be the reason?
Any help is appreciated very much.
Sorry for the delay. I assume you are not running Both CORS filter sections in the web.xml?
Are you able to confirm the CORS header is not being sent with a tool like Postman or CURL?
Is it possible you can share the fragment you added to the web.xml?
You can message it to me privately if you wish.
Regards, -Chris Kaminski