File extensions blocked by NAV (Note, as of 10/16 we are using an alternative anti-virus so these extensions may not be the ones currently blocked).
Files with the following extensions are blocked by our antivirus software when sent/received via our email system. While zip files themselves aren't blocked, zip files containing any of the file extensions listed below will be blocked. To send or receive a file with one of the blocked extensions, you may temporarily change the extension by renaming the file.
EXE - Executable file (program, application)
AVI - Microsoft Video for Windows video clip
MP3 - MPEG Audio Layer 3 file
MPG - MPEG animation
MPEG - MPEG animation
ASX - Microsoft Streaming Redirector File
ADE - Microsoft Access Project
ADP - Microsoft Access Project
BAS - BASIC code
BAT - MS-DOS batch file
BIN - Binary data file
CHM - Compiled HTML file
CMD - Command file for Windows NT (similar to an MS-DOS BAT file)
COM - Command file (MS-DOS based program)
CPL - Control Panel application
CRT - Certificate file
DLL - Windows Dynamic Link Library
EML - Microsoft Outlook Express mail message (MIME RFC 822)
HIV - Unknown, standard blocked Outlook extension
HLP - Windows Help File
HTA - HTML application
INF - Setup Information File
INS - Installshield Install script
ISP - X-Internet signup file
JS - Javascript Source code
JSE - Javascript Encoded script file
JTD - Unknown, standard blocked Outlook extension
MSC - Microsoft Common Console document
MSI - Windows Installer Package
MSP - Windows Paintbrush picture
MST - Microsoft Visual Test Source files
OCX - Microsoft Object Linking and Embedding custom control (ActiveX)
OFT - Microsoft Outlook Template
OVL - Program Overlay
PCD - Photo CD Image, Visual Compiled Script
PIF - IBM Pif Drawing, Windows shortcut
PL - Perl program
PLX - Active Perl executable
REG - Windows Registry file
SCR - Windows Screen Saver
SCT - Microsoft Visual Foxpro Form Memo, Scitex CT bitmap
SH - Unknown, standard blocked Outlook extension
SHB - Document shortcut file
SHS - Shell scrap file
SYS - System file
VB - Visual Basic file
VBE - Visual Basic file
VBS - Visual Basic script
VSS - Microsoft Visual SourceSafe
VST - Visio template
VXD - Microsoft Windows virtual device driver
WSC - Windows Script component
WSF - Windows Script file
WSH - Windows Script host settings file