MAPI over HTTP can't remove client sessions timely if using OAuth and the resource has a master account in Exchange Server 2013

Applies to: Exchange Server 2013 EnterpriseExchange Server 2013 Service Pack 1Exchange Server 2013 Standard Edition

Symptoms


When you use OAuth authentication and the resource that is accessed has a linked master account in Microsoft Exchange Server 2013, Messaging Application Programming Interface (MAPI) over HTTP protocol fails to tear down client sessions in a timely manner.

Resolution


To fix this issue, install Cumulative Update 19 for Exchange Server 2013 or a later cumulative update for Exchange Server 2013.

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References


Learn about the terminology that Microsoft uses to describe software updates.