One of our apprentices reset everyones 365 password by mistake. This has been corrected and every staff member has reset their passwords again.
However, one director is having an issue where he is constantly prompted for his password on his iPhone only.
We reset the password, synced, reset the password back and synced... this works for around 30 mins when he is prompted again.
We removed and re-added the Exchange account in IOS, it connects. Again after 30 mins issue reoccurs.
We removed the account, reset the password, restarted the phone, re added the account with the new password. This again starts prompting for a password.
We are at a loss. Can anyone suggest something we can try to resolve this?