Real-time Updates error for CMS 12

  • Updated
Description

Some customers reported when running edit mode of CMS 12, it popped out real-time updates error as below. 

Screenshot001.png

You are able to remove this error by turning off the web socket from code.

services.Configure<UIOptions>(o => { o.WebSocketEnabled = false });
Steps

This issue may be caused by a custom requests pipeline or a filter that also processes WSS connection and breaks the web socket. You can check the WSS connection through the developer tool of browser. You may also check the log of server-side to find the cause of it.