We suggest the following fixes if you get This is not a valid file name error in Outlook when sending email: Remove invalid special characters from the file name ...

One common issue while sending emails is when they keep bouncing back. The non-delivery report mentions the error as the presence of an illegal attachment. This ...

Since it won't open, it is either corrupt or possibly misnamed. Save the attachment to your file system and see if you recognize the file suffix (you may need to click Tools, Folder Options, View tab ...