When you try to update the Department field of user mailbox by Exchange Control Panel (ECP) portal in a Microsoft Exchange Server 2013 environment, and the length of value is exceeding 64 characters, you receive the following error message:

The property is too long. The maximum length is 64 and the length of the value provided is 80.essage content goes here.


This behavior is by design. This issue occurs because the length of the Department field is hard defined.


To fix this issue, install Cumulative Update 17 or a later cumulative update for Exchange Server 2013.


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


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

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