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Description:  

Prevents users from using Add or Remove Programs.

This setting removes Add or Remove Programs from Control Panel and removes the Add or Remove Programs
item from menus.

Add or Remove Programs lets users install, uninstall, repair, add, and remove features and components of
Windows 2000 Professional and a wide variety of Windows programs. Programs published or assigned to the
user appear in Add or Remove Programs.

If you disable this setting or do not configure it, Add or Remove Programs is available to all users.

When enabled, this setting takes precedence over the other settings in this folder.

This setting does not prevent users from using other tools and methods to install or uninstall programs.

Supported on: Windows Server 2003, Windows XP, and Windows 2000 operating systems only.
Remove Add or Remove Programs
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 Remove Add or Remove Programs.
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 NoAddRemovePrograms 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 NoAddRemovePrograms and edit the value:

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

To Disable:
Change the data value with:
NoAddRemovePrograms = 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 NoAddRemovePrograms /t REG_DWORD /d 1 /f

Disabled:
REG add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Uninstall" /v NoAddRemovePrograms /t REG_DWORD /d 0 /f
Not Configured:
REG DELETE "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Uninstall" /v NoAddRemovePrograms /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 = "NoAddRemovePrograms"
'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 NoAddRemovePrograms -value 1 -PropertyType DWord -Force
  ##Disabled
  ##New-ItemProperty -path $RegKey -name NoAddRemovePrograms -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 NoAddRemovePrograms -value 1 -PropertyType DWord
  ##Disabled
  ##New-ItemProperty -path $RegKey -name NoAddRemovePrograms -value 0 -PropertyType DWord
}

Not Configured

$RegKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies"
Remove-ItemProperty -Path($RegKey + "\Uninstall") -name NoAddRemovePrograms
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 you have access to "Add or Remove Programs" under Start -> Control Panel.
You can prevent users from using "Add or Remove Programs" using Group Policy or modify the specific
registry key.  

Note: If you want to prevent a specific user from using "Add or Remove Programs" you need to modify or
add the
registry key under his SID.