I am getting a 401 response when hitting the Power BI login page! https://app.powerbi.com/?noSignUpCheck=1
We're seeing this with 2/10 computers so far after kicking off a power BI project.
It is something to do with the cache as Power BI embedded fails to load (401 on reportEmbed.js).
Using Chrome to access power BI login page we get an instant 401 from the brower, while loading the same page in Private mode will work fine.
Additional notes:
This seems to only be happening to people who have a Power BI account, but we can't log out as the browser can't load the page to log out.