SharePoint Online: Blocked File Name Extensions

The list below details the file types and extensions which are blocked on a standard SharePoint 2007 Online site.

Extension File Type
.app Application file
.bas Microsoft Visual Basic Class Module
.bat Batch File
.chm Compiled HTML Help File
.class Java Class File
.cod Windows NT Command Script
.com Microsoft MS-DOS program
.cal Control Panel Extension
.crt Security Certificate
.dll Windows Dynamics Link Library
.exe Executable Program
.fxp Microsoft Visual FoxPro Compiled Program
.hlp Help File
.hta HTML Application
.ins Internet Naming Service
.isp Internet Communications Settings
.jse JScript Encoded Script File
.lnk Shortcut
.mda Microsoft Office Access Add-In Program
.mdb Microsoft Office Access Program
.mde Microsoft Office Access MDE Database
.mdt Microsoft Office Access Data File
.mdw Microsoft Office Access Workgroup
.mdz Microsoft Office Access Wizard Program
.msc Microsoft Common Console Console Document
.msi Windows INstaller Package
.msp Windows Installer Patch
.mst Microsoft Visual Test Source Files
.ops Microsoft Office Profile Settings File
.pcd Photo CD Image or Visual Test Source Files
.pif Shortcut to MS-DOS Program
.prf System File
.reg Registration Entries
.scf Windows Explorer Command File
.scr Screen Saver
.sct Windows Script Component
.shb Windows Shortcut
.shs Shell Scrap Object
.url Uniform resource Locator (Internet Shortcut)
.vb Visual Basic Script File
.vbe Visual Basic Scripting Edition Encoded Script File
.vbs Visual Basic Scripting Edition File
.wsc Windows Script Compnent
.wsf Windows Scipt File
.wsh Windows Script Host Setting File

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