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Allow installation of desktop items: registry value 1800 (Zones\0)ComputerHKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0

Policy ID
IZ_PolicyInstallDesktopItems_9
Scope
Computer Configuration, User Configuration
Supported on
Only Internet Explorer 6.0 in Windows XP Service Pack 2 or Windows Server 2003 Service Pack 1 through IE8 inclusive
Source
Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category
Windows Components › Internet Explorer › Internet Control Panel › Security Page › Local Machine Zone

Registry

1800

REG_DWORDComputerUser
…\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0 Current key
HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
Enabled value
Depends on the option value
Element
Allow installation of desktop items
Options
ItemStored value
Enable0
Disable3
Prompt1
Apply with .reg · CMD · PowerShell
ComputerMachine-wide setting
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0]

; Options (use only one)
; Enable
"1800"=dword:00000000
; Disable
"1800"=dword:00000003
; Prompt
"1800"=dword:00000001
CMD
:: Options (use only one)

:: Enable
reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0" /v "1800" /t REG_DWORD /d 0 /f
:: Disable
reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0" /v "1800" /t REG_DWORD /d 3 /f
:: Prompt
reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0" /v "1800" /t REG_DWORD /d 1 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0' -Force | Out-Null

# Options (use only one)
# Enable
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0' -Name '1800' -PropertyType DWord -Value 0 -Force | Out-Null
# Disable
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0' -Name '1800' -PropertyType DWord -Value 3 -Force | Out-Null
# Prompt
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0' -Name '1800' -PropertyType DWord -Value 1 -Force | Out-Null
UserPer-account setting
.reg
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0]

; Options (use only one)
; Enable
"1800"=dword:00000000
; Disable
"1800"=dword:00000003
; Prompt
"1800"=dword:00000001
CMD
:: Options (use only one)

:: Enable
reg add "HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0" /v "1800" /t REG_DWORD /d 0 /f
:: Disable
reg add "HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0" /v "1800" /t REG_DWORD /d 3 /f
:: Prompt
reg add "HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0" /v "1800" /t REG_DWORD /d 1 /f
PowerShell
# Common: create the key
New-Item -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0' -Force | Out-Null

# Options (use only one)
# Enable
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0' -Name '1800' -PropertyType DWord -Value 0 -Force | Out-Null
# Disable
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0' -Name '1800' -PropertyType DWord -Value 3 -Force | Out-Null
# Prompt
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0' -Name '1800' -PropertyType DWord -Value 1 -Force | Out-Null