BC publishing issue

Hello All,

One more new thing faced today. I created new project and trying to publish HelloWorld but getting bellow window.

and browser looks like this

if I try to connect directly to Sandbox through browser its connecting.

What is this issue? I clear history, restarted system.

Web%20Request%20Helper.dal window opens in VS Code.

can someone tell

what is the issue,reason and how to resolve it.

Thanks in advance.