If you trust the source of this presentation, click Repair.
Note If the email contains attachments of only the same extension, you may notice that content is not in the correct file.
To resolve this issue for Outlook 2010, install the October 13, 2015, update for Outlook 2010. For information about this update, click the following article to view it in the Microsoft Knowledge Base:
Article ID: 3095559 - Last Review: 20 Jan 2016 - Revision: 1