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Description:  

Specifies a connection-specific DNS suffix. This setting supersedes the connection-specific DNS suffixes set
on the computers to which this setting is applied, those configured locally and those configured using DHCP.

Warning: A connection-specific DNS suffix specified in this setting is applied to all the network connections
used by multihomed computers to which this setting is applied.

To use this setting, click Enable, and then enter a string value representing the DNS suffix in the
available field.

If this setting is not configured, it is not applied to any computers, and computers use their local or
DHCP-configuration parameters.

Supported on: Windows XP Professional only.
Connection-Specific DNS Suffix
Description Gpedit Regedit CMD Back VBScript PowerShell Script
Gpedit:   

Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Type gpedit.msc and press Enter
In the Group Policy window please navigate to Computer Configuration -> Administrative Templates ->
Network -> DNS Client and open Connection-Specific DNS Suffix.
Not Configured -> is the Default state
Enabled -> apply this GPO
Disabled -> this GPO will not be applied

To finish press ok button and close Group Policy window.
Description Gpedit Regedit CMD Up Back VBScript
Type regedit and press ok
Please confirm User Account Control pop-up
Microsoft official disclaimer

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by
using another method. These problems might require that you reinstall the operating system. Microsoft
cannot guarantee that these problems can be solved. Modify the registry at your own risk.

Note: This registry key is created by Group Policy when this GPO is Enable. The GPO Default state is Not
Configured -> this registry entry is not present. For Disable this registry entry is not present.

Please navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient and
locate
AdapterDomainName registry key
Regedit:          

Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Description Gpedit Regedit CMD Up Back VBScript
Double click on AdapterDomainName and edit the value:

To Enable:
Change the data value with abc.com

To finish press ok button and close Registry Editor window

Note: Manual editing of this registry key will not be reflected in Group Policy. If you modify this GPO from
Group Policy this registry key will be rewritten.
Description Gpedit Regedit Back CMD VBScript Up
Type cmd, right click on cmd icon under the Programs and click on Run as administrator
Please confirm User Account Control pop-up
Please select, right and copy a registry key from below, then right click on command prompt window
, select Paste and press Enter

Enabled:
REG add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient" /v AdapterDomainName /t REG_SZ /d abc.com /f

Not Configured\Disabled:
REG DELETE "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient" /v AdapterDomainName /f

Note: Manual editing of this registry key will not be reflected in Group Policy. If you modify this GPO from
Group Policy this registry key will be rewritten.
CMD:          

Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Description Gpedit Regedit Back CMD VBScript Up
VBScript:          

Const HKEY_LOCAL_MACHINE = &H80000002
strComputer = "."
Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" & _
strComputer & "\root\default:StdRegProv")

strKeyPath = "SOFTWARE\Policies\Microsoft\Windows NT\DNSClient"
oReg.CreateKey HKEY_LOCAL_MACHINE,strKeyPath
strValueName = "AppendToMultiLabelName"
'Enabled
strValue = "abc.com"
oReg.SetStringValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName,strValue
'Not Configured
'oReg.DeleteValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName
Description Gpedit Regedit Back CMD VBScript Up
PowerShell Script :          

Enabled

$RegKey = "HKLM:\SOFTWARE\Policies\Microsoft"
If(Test-Path ($RegKey + "\Windows NT"))
{
 $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT"
 If(Test-Path ($RegKey + "\DNSClient"))
 {
   $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient"
   ##Enabled
   New-ItemProperty -path $RegKey -name AdapterDomainName -value abc.com -PropertyType String -Force
 }
 else
 {
   New-Item -path $RegKey -name Service
   $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient"
   ##Enabled
   New-ItemProperty -path $RegKey -name AdapterDomainName -value abc.com -PropertyType String
 }
}
else
{
 New-Item -path $RegKey -name Windows NT
 $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT"
 New-Item -path $RegKey -name Service
 $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient"
 ##Enabled
 New-ItemProperty -path $RegKey -name AdapterDomainName -value abc.com -PropertyType String
}

Not Configured\Disabled

$RegKey = "HKLM:\SOFTWARE\Policies\Microsoft"
Remove-ItemProperty -Path($RegKey + "\Windows NT\DNSClient") -name AdapterDomainName
If( (Get-Item -Path($RegKey + "\Windows NT\DNSClient")).ValueCount -eq 0 -and (Get-Item -Path($RegKey + "\Windows NT\DNSClient")).SubKeyCount -eq 0)
{
 Remove-Item -Path($RegKey + "\Windows NT\DNSClient")
 If( (Get-Item -Path($RegKey + "\Windows NT")).ValueCount -eq 0 -and (Get-Item -Path($RegKey + "\Windows NT")).SubKeyCount -eq 0)
 {
   Remove-Item -Path($RegKey + "\Windows NT")
 }
}
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