I'm now getting a similar error/problem with the latest version, all other Office Apps are working fine, it's just Power BI and my administrator can't find anything wrong. This only signs me out when I try to publish and I can't sign in again without a reboot:
An error occurred
An error occurred. Contact your administrator for more information.
Relying party: Microsoft Office 365 Identity Platform
Error time: Fri, 03 Mar 2017 12:28:53 GMT
User agent string: Mozilla/5.0 (Windows NT 6.1; Win64; x64; Trident/7.0; rv:11.0) like Gecko
I start off logged into my Office account and as soon as I publish, it generates this error. The only fix seems to be a reboot of the laptop, after which I can login fine for an hour or two before this happens again. There's no way to send a frown on this screen.