Register PTR records: registry value RegisterReverseLookupComputerHKLM\Software\Policies\Microsoft\Windows NT\DNSClient
- Policy ID
- DNS_RegisterReverseLookup
- Scope
- Computer Configuration
- Supported on
- At least Windows Server 2003 operating systems or Windows XP Professional
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- Network › DNS Client
Registry
RegisterReverseLookup
REG_DWORDComputer- Enabled value
- Depends on the option value
- Element
- Register PTR records:
| Item | Stored value |
|---|---|
| Register only if A record registration succeeds | 2 |
| Register | 1 |
| Do not register | 0 |
Apply with .reg · CMD · PowerShell
.reg
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\DNSClient] ; Options (use only one) ; Register only if A record registration succeeds "RegisterReverseLookup"=dword:00000002 ; Register "RegisterReverseLookup"=dword:00000001 ; Do not register "RegisterReverseLookup"=dword:00000000
CMD
:: Options (use only one) :: Register only if A record registration succeeds reg add "HKLM\Software\Policies\Microsoft\Windows NT\DNSClient" /v "RegisterReverseLookup" /t REG_DWORD /d 2 /f :: Register reg add "HKLM\Software\Policies\Microsoft\Windows NT\DNSClient" /v "RegisterReverseLookup" /t REG_DWORD /d 1 /f :: Do not register reg add "HKLM\Software\Policies\Microsoft\Windows NT\DNSClient" /v "RegisterReverseLookup" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient' -Force | Out-Null # Options (use only one) # Register only if A record registration succeeds New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient' -Name 'RegisterReverseLookup' -PropertyType DWord -Value 2 -Force | Out-Null # Register New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient' -Name 'RegisterReverseLookup' -PropertyType DWord -Value 1 -Force | Out-Null # Do not register New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient' -Name 'RegisterReverseLookup' -PropertyType DWord -Value 0 -Force | Out-Null