Microsoft Outlook could be setup to simply accept office 2010 pro plus of a certain size. If you're attempting to get a large file verify this selection is not enabled by following the steps below.

1.Open Outlook

2.Click Tools

3.Click Options

4.Click on the Mail Delivery tab

5.Under Mail Delivery ensure the box "Don't download messages larger than xxx KB" isn't checked.

Finally, in some instances the cheap microsoft office 2013 or e-mail provider will scan incoming e-mails and attachments and delete an e-mail if it's considered unsafe or you exceed the allocated space.

To determine if this is the reason for your issue, you should contact either your Internet service provider or e-mail provider.

A different to this recommendation would be to setup a totally free webmail account and check out receiving the attachment through the webmail address.