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Description:  

Prevents users from viewing or installing published programs.

This setting removes the "Add programs from your network" section from the Add New Programs page. The
"Add programs from your network" section lists published programs and provides an easy way to install them.

Published programs are those programs that the system administrator has explicitly made available to the
user with a tool such as Windows Installer. Typically, system administrators publish programs to notify users
that the programs are available, to recommend their use, or to enable users to install them without having to
search for installation files.

If you enable this setting, users cannot tell which programs have been published by the system administrator,
and they cannot use Add or Remove Programs to install published programs. However, they can still install
programs by using other methods, and they can view and install assigned (partially installed) programs that
are offered on the desktop or on the Start menu.

If you disable this setting or do not configure it, "Add programs from your network" is available to all users.

Note: If the "Hide Add New Programs page" setting is enabled, this setting is ignored.

Supported on: Windows Server 2003, Windows XP, and Windows 2000 operating systems only.
Hide the "Add programs from your
network" option
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 User Configuration -> Administrative Templates ->
Control Panel -> Add or Remove Programs and open Hide the "Add programs from your network" option.
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.
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 or Disable. The GPO Default state
is Not Configured -> this registry entry is not present.

Please navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies
\Uninstall
and locate NoAddFromNetwork 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
   
   
Double click on NoAddFromNetwork and edit the value:

To Enable:
Change the data value with:
NoAddFromNetwork = 1

To Disable:
Change the data value with:
NoAddFromNetwork = 0

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.
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 "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Uninstall" /v NoAddFromNetwork /t REG_DWORD /d 1 /f

Disabled:
REG add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Uninstall" /v NoAddFromNetwork /t REG_DWORD /d 0 /f
Not Configured:
REG DELETE "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Uninstall" /v NoAddFromNetwork /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
   
VBScript:          

Const HKEY_CURRENT_USER = &H80000001
strComputer = "."
Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" & _
strComputer & "\root\default:StdRegProv")

strKeyPath = "Software\Microsoft\Windows\CurrentVersion\Policies\Uninstall"
oReg.CreateKey HKEY_CURRENT_USER,strKeyPath
strValueName = "NoAddFromNetwork"
'Enabled
dwValue = 1
'Disabled
'dwValue = 0
oReg.SetDWORDValue HKEY_CURRENT_USER,strKeyPath,strValueName,dwValue
'Not Configured
'oReg.DeleteValue HKEY_CURRENT_USER,strKeyPath,strValueName
PowerShell Script :          

Enabled\Disabled

$RegKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies"
If(Test-Path ($RegKey + "\Uninstall"))
{
 $RegKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies\Uninstall"
  ##Enabled
  New-ItemProperty -path $RegKey -name NoAddFromNetwork -value 1 -PropertyType DWord -Force
  ##Disabled
  ##New-ItemProperty -path $RegKey -name NoAddFromNetwork -value 0 -PropertyType DWord -Force
}
else
{
 New-Item -path $RegKey -name Uninstall
 $RegKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies\Uninstall"
  ##Enabled
  New-ItemProperty -path $RegKey -name NoAddFromNetwork -value 1 -PropertyType DWord
  ##Disabled
  ##New-ItemProperty -path $RegKey -name NoAddFromNetwork -value 0 -PropertyType DWord
}

Not Configured

$RegKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies"
Remove-ItemProperty -Path($RegKey + "\Uninstall") -name NoAddFromNetwork
If( (Get-Item -Path($RegKey + "\Uninstall")).ValueCount -eq 0 -and (Get-Item -Path($RegKey + "\Uninstall")).SubKeyCount -eq 0)
{
 Remove-Item -Path($RegKey + "\Uninstall")   
}
Up Back
   
   
   
Result
By Default "Add programs from your network" is present under Start -> Control Panel -> Add or Remove
Programs -> Add New Programs
(when the computer is in a domain).
You can hide "Add programs from your network" from Add New Programs using Group Policy or modify the
specific
registry key.  

Note: If you want to hide "Add programs from your network" to a specific user you need to modify or add
the
registry key under his SID.