An user cannot log in to their Exchange mailbox using OWA (Outlook Web Access). Customer's administrator reset the user's password in POA Control Panel, however the user is still unable to log in.
Before the user's password was changed, their Active Directory account was locked because of many login attempts with incorrect password. Changing the password does not unlock the AD account.
Another possible reason of problem is that password changing process was not yet completed, see the Knowledgebase article #116049 for resolution.
POA can manage user locking settings in POA and Active Directory if the 'ADLockoutMonitor' package is installed on all Active Directory domain controllers in the Windows hosted environment. Details are available in the POA Provider's Guide > Synchronizing POA and AD User Lockouts. If this package is deployed on domain controllers, AD user account can be unlocked from POA Control Panel. This can be done by customer as well as by Provider.