opening norton diagnostic report

I have always used chrome as my default browser, except for Norton ( if i checked for new versions or opened a diagnostic report, they would be opened using IE 11, so that it would be easier  to create a desk short cut.  3 days ago after a live update saying, words to the effect, that norton would analyse my productivity, the new version check and the open diagnostic report in browser, now both open in chrome.

I am using a toshiba satellite laptop with windows 10.  I tried reinstalling Norton, but nothing changed.

Thank you in advance for any help that I can get in reverting to prior system.

Harry