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Office 365 (Outlook on the Web) - Blocked File Attachment Types

Outlook on the Web by default blocks the attachment file types listed below.

However, a workaround is to use the Outlook desktop client (either on Mac or Windows) to download these blocked attachments.

.vsmacros - Visual Studio .NET Binary-based Macro Project (Microsoft)
.msh2xml  - Microsoft Shell
.msh1xml  - Microsoft Shell
.ps2xml - Windows PowerShell
.ps1xml - Windows PowerShell
.mshxml - Microsoft Shell
.gadget - Windows Vista Gadget
.mhtml -  MIME Html
.psc2 - Windows PowerShell
.psc1 - Windows PowerShell
.msh2 - Microsoft Shell
.msh1 - Microsoft Shell
.aspx - Active Server Page Extended
.xml - Extensible Markup Language
.wsh - Windows Script Host Settings File
.wsf - Windows Script File
.wsc - Windows Script Component
.vsw - Visio Workspace File (Microsoft)
.vst - Virtual Studio Technology
.vss - Visio Stencil
.vbs - VBSript Script File, Visual Basic for Applications Script
.vbe - VBScript Encoded Script File
.url - Internet Location
.tmp-  Temporary File/Folder
.shs - Shell Scrap Object File
.shb - Windows Shortcut into a Document
.sct - Windows Script Component, Foxpro Screen (Microsoft)
.scr - Windows Screen Saver
.scf - Windows Explorer Command
.reg - Registration Information/Key for W95/98, Registry Data File
.pst - MS Exchange Address Book File, Outlook Personal Folder File (Microsoft)
.ps2 - Windows PowerShell 
.ps1 - Windows PowerShell
.prg - Program File
.prf - Windows System File
.plg - Developer Studio Build Log
.pif - Windows Program Information File (Microsoft)
.pcd-  Visual Test (Microsoft)
.ops - Office Profile Settings File
.mst - Windows SDK Setup Transform Script
.msp - Windows Installer Update 
.msi - Windows Installer File
.msh - Microsoft Shell
.msc - Microsoft Management Console Snap-in Control File (Microsoft) 
.mdz - Access Wizard Template (Microsoft)
.mdw - Access Workgroup Information (Microsoft)
.mdt - Access Add-in Data (Microsoft)
.mde - Access MDE Database File (Microsoft)
.mdb - Access Application (Microsoft), MDB Access Database (Microsoft)
.mda - Access Add-in (Microsoft), MDA Access 2 Workgroup (Microsoft)
.maw - Access Data Access Page (Microsoft)
.mav- Access View Shortcut (Microsoft)
.mau - Media Attachment Unit
.mat - Access Table Shortcut (Microsoft)
.mas - Access Stored Procedures (Microsoft)
.mar - Access Report Shortcut (Microsoft)
.maq - Access Query Shortcut (Microsoft)
.mam - Access Macro Shortcut (Microsoft)
.mag - Access Diagram Shortcut (Microsoft)
.maf - Access (Microsoft)
.mad - Access Module Shortcut (Microsoft)
.lnk - Windows Shortcut File
.ksh - UNIX Shell Script
.jse - JScript Encoded Script File
.its - Internet Document Set, Internet Translation
.isp - IIS Internet Service Provider Settings (Microsoft)
.ins - IIS Internet Communications Settings (Microsoft)
.inf - Information or Setup File
.hta - Hypertext Application
.hlp - Windows Help File
.fxp - FoxPro Compiled Source (Microsoft)
.exe - Executable File
.der - DER Encoded X509 Certificate File
.csh - csh Script
.crt - Certificate File
.cpl - Windows Control Panel Extension (Microsoft)
.com - Command
.cmd - DOS CP/M Command File, Command File for Windows NT
.chm - Compiled HTML Help
.cer - Internet Security Certificate File
.bat - Batch Processing
.bas - BASIC Source Code
.asp - Active Server Page
.app - Executable Application
.adp - Access Project (Microsoft)
.ade - Access Project Extension (Microsoft)
.ws - Windows Script File
.vb - VBScript File or Any Visual Basic Source
.js - JavaScript Source Code

Keywords:office, 365, o365, outlook, web, ootw, file, attachments, types, blocked, download, how to   Doc ID:42815
Owner:Help Desk K.Group:UW-Milwaukee Help Desk
Created:2014-08-12 09:13 CDTUpdated:2017-05-12 15:50 CDT
Sites:UW-Milwaukee Help Desk
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