@"KevinTheJedi"
Thanks for that, oddly enough I arrived at that documentation myself think there was a popup in the config. The main problem I think, it was the account, it had a stupid MFA strength setup was getting stuck asking for more information. Being a federated account I needed to add federated password + software token to the list to get a full authentication to work. Once I was able to get in to office.com with it the token side of things is issued and like you say I've got a token tab, which I hope renews as it appears to be a 24 hr window. It's working like a champ now as far as I can see.
Thanks again for the help.