Microsoft Office Outlook 2003 Blocked attachments (*.exe) Leave a Reply Regedit to stop *.com & *.exe in outlook 2003 (different reg entry for 2007) Regedit [HKEY_CURRENT_USERSoftwareMicrosoftOffice11.0OutlookSecurity] "Level"=dword:00000003 "UseCRLChasing"=dword:00000001 "Level1Remove"=".exe;.com"Regedit [HKEY_CURRENT_USERSoftwareMicrosoftOffice11.0OutlookSecurity] "Level"=dword:00000003 "UseCRLChasing"=dword:00000001 "Level1Remove"=".exe;.com" Share:EmailPrintTweet