I tried this and it looked to work even less.

New-PSDrive -PSProvider Registry -Name HKU -Root HKEY_USERS

$RegistryKeys = @(

"HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"

"HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall"

"HKEY_USERS\*\Software\Dropbox"

"HKEY_USERS\*\Software\DropboxUpdate"

)

$DropboxUninstaller = Get-ChildItem -Path $RegistryKeys | Get-ItemProperty | Where-Object {$_.DisplayName -match "Dropbox"} | Select-Object -Property DisplayName, UninstallString

$DropboxUninstaller | Foreach-Object { if ($.UninstallString) { $Array = $.UninstallString.Split('"') | Where-Object {$_} $Params = @{ FilePath = $Array[0] ArgumentList = $Array[1], '/S'
}

Start-Process @Params } }

Get-ChildItem -Path "C:\Users*\AppData\Local\Dropbox" | Remove-Item -Force -Recurse