Blocked Email Attachment Extensions

Owned by se-choy4@seattleu.edu (Deactivated)
Last updated: Dec 20, 2023 by Eric Eason
1 min read

As part of Seattle University's commitment to cyber security, we block certain file extensions that are sent through campus email. These file extensions are a potential security risk because they could spread viruses through personal and University computers. Below is the list of identified file types that are blocked as part of this security measure. If you have any questions or concerns, please contact the Service Desk.

Blocked File Extensions in Office 365: 

.ade

.adp

.app

.asp

.asa

.asnx

.asmx

.bas

.bat

.cdx

.cer

.chm

.class

.cmd

.com

.config

.cpl

.crt

.csh

.der

.dll

.docm

.dotm

.exe

.fxp

.gadget

.hlp

.hta

.htr

.htw

.ida

.idc

.idq

.inf

.ins

.isp

.its

.jar

.js

.jse

.ksh

.lib

.lnk

.mad

.maf

.mag

.mam

.maq

.mar

.mas

.mat

.mau

.mav

.maw

.mda

.mdb

.mde

.mdt

.mdw

.mdz

.msc

.msh

.msh1

.msh1xml

.msh2

.msh2xml

.mshxml

.msi

.msp

.mst

.ops

.pcd

.pif

.plg

.potm

.ppam

.ppsm

.pptm

.prf

.prg

.printer

.ps1

.ps1xml

.ps2

.ps2xml

.psc1

.psc2

.pst

.reg

.rem

.scf

.scr

.sct

.sh

.shb

.shs

.shtm

.shtml

.sldm

.soap

.stm

.tmp

.url

.vb

.vbe

.vbs

.vsmacros

.vsw

.ws

.wsc

.wsf

.wsh

.xlam

.xlm

.xltm

.xnk

.xlsm