Hello,

before the moderator directs me to another similar question, please don't--I've read everything I can see on here and nothing has worked. I've also tried contacting support, and keep getting pushed from support department to support department. I hope someone can help.

I have a Windows Live account - my old Hotmail account. I have an Office 365 account. The email address for my O365 account is setup as an alias for my Windows Live account, and so I logon to both systems using the same email address with different passwords.

All of a sudden (apropos of nothing) my Windows Live login has stopped working. I receive the following error message

You're currently signed in with a Microsoft account as *** Email address is removed for privacy ***, but that account can't be used with Outlook Web App. Please sign out of your Microsoft account, then sign in to Outlook Web App with the account you use to read your organization's email. Click here to sign out. Learn more

I have tried reading widely, logging off everywhere, clearing caches, using InPrivate tabs, different computers ... *everything* ... but still get the same message everytime I try. I can logon to mail.office365.com and those other Office-related services using the Office 365 account details, but that doesn't help me. I have a calendar published to my Windows Live account from Outlook at work, and the inability to logon has stopped that calendar updating ... which is screwing my calendar across all of my devices (including Surface Pro 2 which is otherwise great).

Please help someone...