Steps to reproduce
If you create a new websocket and use WSS as protocol and access a resource from another orgin even if header Access-Control-Allow-Origin:* exists you get an Security Error.
It works in Edge but not in IE11 after the last group of security updates in May 2017 it worked before this.
This line of code on a onclick event on a button
var con = new WebSocket(‘wss://echo.websocket.org/’);
gives the error in the attached image
Comments and activity
- Microsoft Edge Team
Changed Assigned To to “Steven K.”
Changed Status to “Duplicate”
Thank you for providing this information about the issue. This case is a duplicate of Bug 12090409: new Websocket with WSS gives Security Error and we will provide updates on that page.
The MS Edge Team