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Description:  

Determines the DNS suffixes to attach to an unqualified single-label name before submission of a DNS query
for that name.

An unqualified single-label name contains no dots, such as "example". This is different from a fully qualified
domain name, such as "example.microsoft.com.".

With this setting enabled, when a user submits a query for a single-label name, such as "example", a local
DNS client attaches a suffix, such as "microsoft.com", resulting in the query "example.microsoft.com", before
sending the query to a DNS server.

If you enable this setting, you can specify the DNS suffixes to attach before submission of a query for an
unqualified single-label name. The values of the DNS suffixes in this setting may be set using comma-
separated strings, such as "microsoft.com,serverua.microsoft.com,office.microsoft.com". One DNS suffix is
attached for each submission of a query. If a query is unsuccessful, a new DNS suffix is added in place of the
failed suffix, and this new query is submitted. The values are used in the order they appear in the string,
starting with the leftmost value and preceding to the right.

If you enable this setting, you must specify at least one suffix.

If you disable this setting, the primary DNS suffix and network connection-specific DNS suffixes are appended
to the unqualified queries.

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

Supported on: At least Windows XP Professional or Windows Server 2003 family.
DNS Suffix Search List
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 DNS Suffix Search List.
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
SearchList 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 SearchList 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 SearchList /t REG_SZ /d abc.com /f

Not Configured\Disabled:
REG DELETE "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient" /v SearchList /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 = "SearchList"
'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 SearchList -value abc.com -PropertyType String -Force
 }
 else
 {
   New-Item -path $RegKey -name DNSClient
   $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient"
   ##Enabled
   New-ItemProperty -path $RegKey -name SearchList -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 DNSClient
 $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient"
 ##Enabled
 New-ItemProperty -path $RegKey -name SearchList -value abc.com -PropertyType String
}

Not Configured\Disabled

$RegKey = "HKLM:\SOFTWARE\Policies\Microsoft"
Remove-ItemProperty -Path($RegKey + "\Windows NT\DNSClient") -name SearchList
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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