Java permissions: registry value 1C00 (Zones\3)UserHKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- Policy ID
- IZ_PolicyJavaPermissions_1
- Scope
- Computer Configuration, User Configuration
- Supported on
- At least Internet Explorer 6.0 in Windows XP with Service Pack 2 or Windows Server 2003 with Service Pack 1
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- Windows Components › Internet Explorer › Internet Control Panel › Security Page › Internet Zone
Registry
1C00
REG_DWORDUserComputer…\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3 Current key
HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- Enabled value
- Depends on the option value
- Element
- Java permissions
| Item | Stored value |
|---|---|
| High safety | 65536 |
| Medium safety | 131072 |
| Low safety | 196608 |
| Custom | 8388608 |
| Disable Java | 0 |
Apply with .reg · CMD · PowerShell
UserPer-account setting
.reg
Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] ; Options (use only one) ; High safety "1C00"=dword:00010000 ; Medium safety "1C00"=dword:00020000 ; Low safety "1C00"=dword:00030000 ; Custom "1C00"=dword:00800000 ; Disable Java "1C00"=dword:00000000
CMD
:: Options (use only one) :: High safety reg add "HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 65536 /f :: Medium safety reg add "HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 131072 /f :: Low safety reg add "HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 196608 /f :: Custom reg add "HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 8388608 /f :: Disable Java reg add "HKCU\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key New-Item -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Force | Out-Null # Options (use only one) # High safety New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 65536 -Force | Out-Null # Medium safety New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 131072 -Force | Out-Null # Low safety New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 196608 -Force | Out-Null # Custom New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 8388608 -Force | Out-Null # Disable Java New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 0 -Force | Out-Null
ComputerMachine-wide setting
.reg
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] ; Options (use only one) ; High safety "1C00"=dword:00010000 ; Medium safety "1C00"=dword:00020000 ; Low safety "1C00"=dword:00030000 ; Custom "1C00"=dword:00800000 ; Disable Java "1C00"=dword:00000000
CMD
:: Options (use only one) :: High safety reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 65536 /f :: Medium safety reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 131072 /f :: Low safety reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 196608 /f :: Custom reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 8388608 /f :: Disable Java reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v "1C00" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Force | Out-Null # Options (use only one) # High safety New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 65536 -Force | Out-Null # Medium safety New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 131072 -Force | Out-Null # Low safety New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 196608 -Force | Out-Null # Custom New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 8388608 -Force | Out-Null # Disable Java New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3' -Name '1C00' -PropertyType DWord -Value 0 -Force | Out-Null