A user changed their password through OWA over the weekend. When they came in on Monday and opened Outlook it prompted for a password. Problem is it will not accept the password. I have tried resetting the password, checking for stored passwords, deleted the mail profile (now I can't recreate it), tried on another PC. The user has an Android phone which is still working as does OWA. They just can't use Outlook. The PC is Windows 7 Pro with Office Pro 2010 and we use Exchange Server 2010. They are connecting over the LAN. I've tried trying to set up the profile using autodiscover and manually with the same result. It prompts for a password but does not accept it. It should just be using windows authentication. We use Microsoft Dynamics Nav and the user has no problems logging into that with windows authentication.