Configure Outlook Express: registry value BlockExeAttachments (Outlook Express)UserHKCU\Software\Microsoft\Outlook Express

Policy ID: OESettings
Scope: User Configuration
Supported on: Only Internet Explorer 6.0
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Internet Explorer

Registry

BlockExeAttachments

REG_DWORDUser

HKCU\Software\Microsoft\Outlook Express Current key

Checked: 1
Unchecked: 0
Element: Block attachments that could contain a virus
Value type: REG_DWORD

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Outlook Express]

; Options (use only one)
; Checked
"BlockExeAttachments"=dword:00000001
; Unchecked
"BlockExeAttachments"=dword:00000000

CMD

:: Options (use only one)

:: Checked
reg add "HKCU\Software\Microsoft\Outlook Express" /v "BlockExeAttachments" /t REG_DWORD /d 1 /f
:: Unchecked
reg add "HKCU\Software\Microsoft\Outlook Express" /v "BlockExeAttachments" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKCU:\Software\Microsoft\Outlook Express' -Force | Out-Null

# Options (use only one)
# Checked
New-ItemProperty -Path 'HKCU:\Software\Microsoft\Outlook Express' -Name 'BlockExeAttachments' -PropertyType DWord -Value 1 -Force | Out-Null
# Unchecked
New-ItemProperty -Path 'HKCU:\Software\Microsoft\Outlook Express' -Name 'BlockExeAttachments' -PropertyType DWord -Value 0 -Force | Out-Null