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:

Status

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

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