Thunderbird & multiple hotmail accounts sever access

Hello there: can anyone shed some light on how to resolve my issue here where........ having more than one hotmail account confuses the *Identities* for each mailbox, in Thunderbird properties one goes into each accounts *Account settings* then to *Manage Identities* (at the bottom of the page)......there one sets the *default* identity for that email account. The problem I'm encountering is when there are more than a single hotmail account one cannot select more than just one identity to fill into that space. One sets a *default* identity & that single identity doesn't allow the other hotmail identities to function properly. I am getting a constant *Failed to connect to server @ outlook.office.365.com.* because two of the three the identity trying connect to the server are not the *default* identity. The *default* identity will connect to the server. I have 3 hotmail accounts loaded into Thunderbird anyone know of a solution to this? thx very much