A Rollup Update has been released for Outlook 2013. This is a non-security update which contains the following documented change;
- Outlook now can block the sending and receiving of Python files (.py, .pyc, .pyo, .pyw, .pyz and .pyzw) as attachments.
View: Download information for KB4484096
Note: This update can be installed via Microsoft Update or the Update Now button when you are using Office 2013 Click-To-Run and updates Outlook to version 15.0.5172.1000.