Symptoms
Assume that you use Microsoft Outlook 2016 to connect to Microsoft Exchange Server 2013 or Microsoft Exchange Server 2016 in cache mode. Then, you send an email message that contains a text attachment whose size is exactly 32,732 bytes. In this situation, the recipient receives a corrupted attachment.
Cause
This issue occurs because the size of the attachment stream isn't handled correctly by remote operations (ROPs).
Resolution
To fix this issue, install one of the following cumulative updates:
-
Cumulative Update 18 for Exchange Server 2013 or a later cumulative update for Exchange Server 2013
-
Cumulative Update 7 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
