When I try to add a outlook.com account to Outlook 365 (desktop app), the account is not discovered and when I spedify "Outlook.com" it asks me for credentials and reports that the username doesn't exist.
I can login with this account directly in outlook.com, the account exists and I don't have any alias.
But I can configure the account in Outlook 2013 on the same computer.
It was configured on Outlook 365 but since last month start to ask me credentials and reporting the message of non-existent username, that, in a matter of fact, exists. I deleted the account and I could never re-add it.
What might be wrong? It seems that is connected with some update of Office 365 around March, when it started to ask me for login.
Attached are five images: AddAccount.jpg - Screenshot of the add account from Outlook 365; LoginFailed.jpg - Message stating that the name can be incorrect; LoginOL.jpg - Screenshot of the login form in outlook.com; AccountType.jpg - Chooser of the account type (created by me); LoginSuccess.jpg - screenshot of the account logged in with the credentials that were rejected by Outlook 365.