To prevent the spread of malicious software, WCU’s implementation of Exchange Online Protection (EOP) blocks emails that have files with executable content as attachments. Examples of file types that would be blocked are .exe, .dll and .bat files. This block also filters zip files that contain files with executable contents. Zip files that do not include such files will be delivered normally.

When you send an email using your Outlook client with an executable file attached to it, you will receive the following warning:


If you click Yes to send the email anyway, it will not be delivered, and you will receive an Undeliverable notification in your Inbox:


Faculty and staff who need to share such files should use the Mercury file share (H: drive), the WCU Intranet or OneDrive.

OneDrive for Western Carolina University will become available as soon as your email account is moved to Office 365. Information on using OneDrive may be found at Enter OneDrive in the Ask IT box.

Please contact the IT Help Desk for any questions or issues.