Unable to Open External URL in current tab

Hi,

I am trying to create a prototype which opens a link to one of the external URL. However, opening the link in new tab or the current tab gives a 401 error (Unauthorized Response).
But on manual refresh, the page opens normally.

So I got curious and tried with Youtube link.
Usign Axure, I was able to open the link in new tab.
When I tried in Current tab, it gave me a message “Youtube refused to connect”

Did anything change from Axure 8 to Axure 9?
I would love to hear the technical side too. Thanks!

Regards,
AC