Microsoft accounts not really working in mail app

[Steve_Everett]

There are long standing issues with Office365/Exchange Accounts on SFOS - synchronisation failures possibly to do with when network access changes from mobile to WLAN and vice versa. See:

Exchange Email Synchronisation Reliability

A bit of an update on this bug. Over the last year or so I’ve been trying different combinations of settings on my test SFOS phones (XA2 standard and, now, Xperia 10 iii) to see if I could narrow down the problem and I think I am getting somewhere. When all of the above symptoms occur (i.e. the Exchange or Office365 account stops synchronising, and nothing will fix it short of deleting the account and setting it up again from scratch) I have the account set to synchronise email, contacts and ca…