Browse file extensions by file type category:

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.

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


Follow us!

Enter any file extension without dot (e.g. pdf)
Search for file extension details and associated application(s)

RSS feed