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function FindInstalledApplication
{
param($appName, $appVersion)
if ((Get-WmiObject win32_operatingsystem).OSArchitecture -notmatch '64')
{
$keys= (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*')
$possible_path= 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*'
if (Test-Path $possible_path)
{
$keys+= (Get-ItemProperty $possible_path)
}
}
else
{
$keys = (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*','HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*')
$possible_path= 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*'
if (Test-Path $possible_path)
{
$keys+= (Get-ItemProperty $possible_path)
}
$possible_path= 'HKCU:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*'
if (Test-Path $possible_path)
{
$keys+= (Get-ItemProperty $possible_path)
}
}
if ($appVersion -eq $null) {
@($keys | Where-Object {$_.DisplayName -like $appName -or $_.PSChildName -like $appName}).Length -gt 0
}
else{
@($keys | Where-Object {$_.DisplayName -like $appName -or $_.PSChildName -like $appName } | Where-Object {$_.DisplayVersion -eq $appVersion} ).Length -gt 0
}
}
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