I have re-installed all MS Office Apps, One Note and Outlook 2015. I first tried activation of One Note and later when Outlook was first posted.
Every time I try to activate I get "No credentials The system requires that you sign on to a valid account." I guess I need to cancel 365 until this gets ironed out Outlook was the app that made me check out 365, but I cannot download or use mail until the app is activated. Outlook 2011 still works.
I have tried both,
http://support.microsoft.com/kb/3025946
and
http://community.office365.com/en-us/f/153/t/283008.aspx
but none of the guides that have been presented work.
Interestingly, I can use the new Outlook app on the iPhone.
I'd appreciate any updates, would love this to work with my work account and personal accounts.