Unblock Outlook Attachments

Wednesday, 14 February 2007 12:44 Herb Oldenburg

Unblock Outlook Attachments


Outlook 2003, Outlook 2002 and Outlook 2000 SP3 (but not Outlook 98 or earlier Outlook 2000 versions) allow the user to use a registry key to open up access to blocked attachments. (Always make a backup before editing the registry.) To use this key:

Run Regedit, and go to this key:

HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Security (change 10.0 to 9.0 for Outlook 2000 SP3 or to 11.0 for Outlook 2003)

Under that key, add a new string value named Level1Remove. For the value for Level1Remove, enter a semicolon-delimited list of file extensions. For example, entering this:


Close Outlook and restart, a reboot is not needed...

Just remember that you have opened up this security lockdown and that you can now open any attachments that you declare within this registry value...

Good Luck...


Last Updated on Friday, 15 June 2012 10:33