You can open only two identically named Excel attachments from different email messages

Symptoms

Consider the following scenario:

  • In Microsoft Outlook, you receive several email messages.
  • All the messages have Microsoft Excel workbook attachments.
  • All the attached files have different content.
  • All the attached files have the same file name.

In this scenario, you can open only two of the attachments by using Excel.

Workaround

Avoid sending email messages that have Excel attachments that share the same file name.