Outlook Weirdness

So I started an Outlook account, ostensibly to try to get my WOW account back. Essentially if you have an account but the email addy is no longer valid, you should start an email that is purely for WOW, no other games. Why? Who the hell knows?

Anyway I did so.

The strangeness? If Outlook is the very first place I go when I open Firefox, it opens just fine. If I try to use Outlook after opening any other website I get this message:

Corrupted Content Error

The site at https://outlook.live.com/mail/inbox has experienced a network protocol violation that cannot be repaired.

The page you are trying to view cannot be shown because an error in the data transmission was detected.

Please contact the website owners to inform them of this problem.

What’s up?

Sounds like a session/cookie issue. Maybe a CORS problem at their server end?

So purely by accident I found out that Outlook will work in a new tab. As if the original tab was corrupted by opening anything in it. New tab, no problem. Weird.