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.

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