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Email attachment blocked file icon Email attachment blocked file type extensions
(95 file extension database entries)

Group of file extensions and file types blocked by email clients such as Microsoft Outlook in email message attachments, in attempt to stop viruses and malicious software spreading through internet via email

List of common file extensions blocked by mail clients

Email attachment blocked file extension list

Group of file extensions and file types blocked by email clients such as Microsoft Outlook in email message attachments, in attempt to stop viruses and malicious software spreading through internet via email.

To help protect your computer, Microsoft Outlook does not allow you to receive files of certain types (such as .exe files) as attachments, because of their potential for introducing a virus into your computer. Outlook blocks these files by default.

Attachment file types blocked by Microsoft Outlook: There are two levels of attachment security. Access to Level 1 files is blocked and can't be changed. When you receive an attachment with a Level 2 file type, you will be prompted to save the file to your hard disk. If you use Microsoft Exchange Server, your system administrator can add or remove file types for both levels of e-mail security. If a file type is added to both levels, it will be treated as a Level 1 file type.

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asp file icon file extension aspActive Server Page script page
bas file icon file extension basBasic source code
bat file icon file extension batBatch file (executable)
com file icon file extension comCommand executable
abx file icon file extension abxCorel WordPerfect Mail address book
 file extension cshcsh script
der file icon file extension derDER encoded internet security certificate
eml file icon file extension emlEmail message
cnt file icon file extension cntHelp Contents data
hlp file icon file extension hlpHelp file
hta file icon file extension htaHTML program
its file icon file extension itsInternet document
crt file icon file extension crtInternet security certificate
cer file icon file extension cerInternet security certificate
 file extension ispInternet Service Provider settings
url file icon file extension urlInternet Shortcut - URL - Uniform Resource Locator
js file icon file extension jsJavaScript source code script
jse file icon file extension jseJScript encoded script
app file icon file extension appMac application package or core system service
 file extension mauMedia Attachment Unit data
mda file icon file extension mdaMicrosoft Access add-in
mde file icon file extension mdeMicrosoft Access compiled database (application)
ade file icon file extension adeMicrosoft Access compiled project
maw file icon file extension mawMicrosoft Access data access page
mdb file icon file extension mdbMicrosoft Access database
mdt file icon file extension mdtMicrosoft Access database template
mag file icon file extension magMicrosoft Access diagram shortcut
maf file icon file extension mafMicrosoft Access form shortcut
mam file icon file extension mamMicrosoft Access macro shortcut
mad file icon file extension madMicrosoft Access module shortcut
adp file icon file extension adpMicrosoft Access project
maq file icon file extension maqMicrosoft Access query shortcut
mar file icon file extension marMicrosoft Access report shortcut
mas file icon file extension masMicrosoft Access stored procedures data
mat file icon file extension matMicrosoft Access table shortcut
mav file icon file extension mavMicrosoft Access view data
mdz file icon file extension mdzMicrosoft Access wizard template
mdw file icon file extension mdwMicrosoft Access workgroup information
chm file icon file extension chmMicrosoft compiled HTML help module
 file extension plgMicrosoft Developer Studio build log
 file extension xnkMicrosoft Exchange shortcut
 file extension insMicrosoft IIS Internet communications settings
msc file icon file extension mscMicrosoft management console control data
 file extension opsMicrosoft Office profile settings
vsw file icon file extension vswMicrosoft Office Visio 2010 web drawing
prf file icon file extension prfMicrosoft Profiler output
 file extension mshMicrosoft Shell script
 file extension msh1Microsoft Shell script
 file extension msh2Microsoft Shell script
vst file icon file extension vstMicrosoft Visio flowchart
vss file icon file extension vssMicrosoft Visio smartshapes data
vbp file icon file extension vbpMicrosoft Visual Basic project
vsmacros file icon file extension vsmacrosMicrosoft Visual Studio binary-based macro project
vb file icon file extension vbMicrosoft Visual Studio Visual Basic script
pcd file icon file extension pcdMicrosoft Visual Test data
hpj file icon file extension hpjMicrosoft Win Help project
cmd file icon file extension cmdMicrosoft Windows command script
msi file icon file extension msiMicrosoft Windows Installer installation package
ins file icon file extension insMicrosoft Windows Internet Naming Service
psc1 file icon file extension psc1Microsoft Windows PowerShell console data
 file extension ps1xmlMicrosoft Windows PowerShell display configuration
 file extension psc2Microsoft Windows PowerShell script
pif file icon file extension pifMicrosoft Windows program information
ws file icon file extension wsMicrosoft Windows script
sct file icon file extension sctMicrosoft Windows script component
wsc file icon file extension wscMicrosoft Windows scripting component
wsh file icon file extension wshMicrosoft Windows Scripting Host data
shs file icon file extension shsMicrosoft Windows Shell Scrap Object
 file extension ps2Microsoft Windows Shell script
shb file icon file extension shbMicrosoft Windows shortcut into a document
 file extension mshxmlMicrosoft XML typedata
scr file icon file extension scrMS Windows screensaver
 file extension prgProgram
exe file icon file extension exeProgram executable
 file extension prgProgram source data
 file extension osdSoftGrid program description
 file extension appSymbian OS application
tmp file icon file extension tmpTemporary data
 file extension appThecusOS application
 file extension kshUnix shell script
vbe file icon file extension vbeVisual Basic encoded script
vbs file icon file extension vbsVisual Basic script
fxp file icon file extension fxpVisual FoxPro compiled database
scf file icon file extension scfWindows Explorer shell command file
inf file icon file extension infWindows installation script
msp file icon file extension mspWindows Installer patch
mst file icon file extension mstWindows Installer transform script
 file extension msh1xmlWindows Power Shell script
ps1 file icon file extension ps1Windows PowerShell cmdlet script
 file extension ps2xmlWindows PowerShell data
 file extension msh2xmlWindows PowerShell script
reg file icon file extension regWindows registry data
wsf file icon file extension wsfWindows Script
 file extension lnkWindows Shortcut
gadget file icon file extension gadgetWindows sidebar gadget


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