MSI package

chocolateyInstall.ps1

$ErrorActionPreference = 'Stop';

$packageArgs = @{
  packageName   = '[[PackageName]]'
  unzipLocation = $toolsDir
  fileType      = 'MSI'
  url           = '[[Url]]'
  url64bit      = '[[Url64]]' # 64bit URL here or remove - if installer is both, use $url
  silentArgs    = "/qn /norestart"
  validExitCodes= @(0, 3010, 1641)
  # optional, highly recommended
  softwareName  = '[[PackageName]]*' #part or all of the Display Name as you see it in Programs and Features. It should be enough to be unique
  checksum      = '[[Checksum]]'
  checksumType  = '[[ChecksumType]]' #default is md5, can also be sha1
  checksum64    = '[[Checksum64]]'
  checksumType64= '[[ChecksumType64]]' #default is checksumType
}

Install-ChocolateyPackage @packageArgs

chocolateyUninstall.ps1

$ErrorActionPreference = 'Stop';
$packageName = '[[PackageName]]'
$softwareName = '[[PackageName]]*' #part or all of the Display Name as you see it in Programs and Features. It should be enough to be unique
$installerType = 'MSI' 
$silentArgs = '/qn /norestart'
# https://msdn.microsoft.com/en-us/library/aa376931(v=vs.85).aspx
$validExitCodes = @(0, 3010, 1605, 1614, 1641)
$uninstalled = $false

$local_key     = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*'
$machine_key   = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*'
$machine_key6432 = 'HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*'
Get-ItemProperty  -Path @($machine_key6432,$machine_key, $local_key) `
                  -ErrorAction SilentlyContinue `
  | ? { $_.DisplayName -like "$softwareName" } `
  | Select -First 1 `
  | % { 
        $silentArgs = "$($_.PSChildName) $silentArgs"
        $file = ''

        Uninstall-ChocolateyPackage -PackageName $packageName `
                                    -FileType $installerType `
                                    -SilentArgs "$silentArgs" `
                                    -ValidExitCodes $validExitCodes `
                                    -File "$file"
        $uninstalled = $true
      }
if (!($uninstalled)) {
    Write-Warning "$packageName has already been uninstalled by other means."
}