Setting the 'AllUsers' option on Wix installer does not work - wix

Question

I am using a WiX to install a service on test machine. But when I do that only the user who installed it on the machine is able to see in the 'Add/Remove Programs' control panel option. But I want to make it visible for every user on the machine.
I did some research and realized that I am not setting the AllUSERS property while creating the installer in the .wxs file.
So I updated my script with this line <Property Id="AllUSERS" Value="1"/> and created the installer. But still only the user who installed can see it in the Control Panel.
Here is my script to create the installer.
<?xml version='1.0' encoding='windows-1252'?>
<Wix xmlns='http://schemas.microsoft.com/wix/2006/wi'>
<Product Name='Importer Service' Id='PUT-GUID-HERE' UpgradeCode='PUT-GUID-HERE'
Language='1033' Codepage='1252' Version='$(var.version)' Manufacturer='Test'>
<Package Id='*' Keywords='Installer' Description="Imports data"
Manufacturer='Test' InstallerVersion='100' Languages='1033' Compressed='yes'
SummaryCodepage='1252' />
<Media Id='1' Cabinet='ImporterWebService.cab' EmbedCab='yes'
DiskPrompt="CD-ROM #1" />
<Property Id='DiskPrompt' Value="Importer Web Service 1.0 Installation [1]" />
<Property Id="WIXUI_INSTALLDIR" Value="INSTALLDIR" />
<Property Id="AllUSERS" Value="1"/>
<Directory Id='TARGETDIR' Name='SourceDir'>
<Directory Id='ProgramFilesFolder' Name='PFiles'>
<Directory Id='Test' Name='Test1'>
<Directory Id='INSTALLDIR' Name='Importer Service'>
<Component Id='MainExecutable' Guid='*'>
<File Id='ImporterWindowsServiceEXE'
Name='Importer.WindowsService.exe' DiskId='1'
Source='Importer.WindowsService.exe' KeyPath='yes'>
</File>
<ServiceInstall
Id="ImporterServiceInstaller"
Type="ownProcess"
Vital="yes"
Name="Importer Service"
DisplayName="Importer Service"
Description="Imports data."
Start="demand"
Account="LocalSystem"
ErrorControl="ignore"
Interactive="no">
</ServiceInstall>
<ServiceControl Id="StartService" Stop="both" Remove="uninstall"
Name="Importer Service" Wait="yes" />
</Component>
<Component Id='FileHelpersLibrary' Guid='*'>
<File Id='FileHelpersDLL' Name='FileHelpers.dll' DiskId='1'
Source='FileHelpers.dll' KeyPath='yes' />
</Component>
<Component Id='CodeSmithDataLibrary' Guid='*'>
<File Id='CodeSmithDataDLL' Name='CodeSmith.Data.dll' DiskId='1'
Source='CodeSmith.Data.dll' KeyPath='yes' />
</Component>
</Directory>
</Directory>
</Directory>
<Directory Id="ProgramMenuFolder" Name="Programs">
<Directory Id="ProgramMenuDir" Name="Importer Service">
<Component Id="ProgramMenuDir" Guid="*">
<RemoveFolder Id='ProgramMenuDir' On='uninstall' />
<RegistryValue Root='HKCU'
Key='Software\[Manufacturer]\[ProductName]'
Type='string' Value='' KeyPath='yes' />
</Component>
</Directory>
</Directory>
<Directory Id="DesktopFolder" Name="Desktop" />
</Directory>
<Feature Id='Complete' Title='Importer Service'
Description='The complete package'
Display='hidden' Level='1' ConfigurableDirectory='INSTALLDIR'>
<ComponentRef Id='MainExecutable' />
<ComponentRef Id='FileHelpersLibrary' />
<ComponentRef Id='CodeSmithDataLibrary' />
<ComponentRef Id='ProgramMenuDir' />
</Feature>
<UIRef Id="WixUI_InstallDir" />
<UIRef Id="WixUI_ErrorProgressText" />
</Product>
</Wix>
Could someone please look at the script and let me know what I am doing wrong.
Thanks.

Answer 1

Instead of setting ALLUSERS explicitly, try setting the InstallScope of the Package element to perMachine. According to the documentation, this fact:
Set this value to declare that the package is a per-machine
installation and requires elevated privileges to install. Sets the
ALLUSERS property to 1.
So, it should do the required job under the hood.