Microsoft Office 365: Blocked Attachments

Technology Services restricts the delivery of certain executable and archival file types (the most common being .zip) through e-mail to help prevent malicious cyber-attacks.

We recommend files be delivered via OneDrive. 

Examples of Blocked File Types

  • Executables
    • exe
    • java
    • msi
    • pif
  • Compressed/Archival
    • ace
    • arc
    • arj
    • binhex
    • bz
    • bad
    • gzip
    • lha
    • rar
    • sit
    • tar
    • unix
    • x-window-packager
    • zip
    • zoo