Error message when you try to open or save an e-mail attachment in Outlook: "Cannot create file"

KB Article: https://support.microsoft.com/kb/305982

INTRODUCTION

When you try to open or save an e-mail attachment, you may receive the following error message:

Cannot create file: file name. Right-click the folder you want to create the file in and click Properties on the shortcut menu to check your permissions for the folder.