Powershell script that uninstalls every windows update on your current machine.

UninstallUpdates.ps1

# This script will uninstall every windows update on your machine (that it can)
# Don't run unless you really want all updates removed ...
# Restart PC when finished

$file = "./updateList.txt"
Function GetUpdateList
{
	if(Test-Path $file) {
		Remove-Item $file
	}
	wmic qfe get "HotFixID" >> $file
	(gc $file) | ? {$_.trim() -ne "" } | set-content $file
	get-content $file |
    select -Skip 1 |
    set-content "$file-temp"
	move "$file-temp" $file -Force
}

Function RemoveUpdates
{
	if(Test-Path $file) {
		$updateIds = Get-Content -Path $file
		$numOfIds = $updateIds.Count
		$count = 1;
		Foreach($updateId in $updateIds) {
			$output = "Uninstalling Update $count of $numOfIds "
			$output
			$updateNum = $updateId.Replace("KB", "")
			$updateNum = $updateNum.Replace(" ", "")
			wusa.exe /kb:$updateNum /uninstall /quiet /norestart | Out-Null
			$count++
		}
	}
	
	if(Test-Path $file) {
		Remove-Item $file
	}
	Write-Host "Done ... Please restart your machine"
	Write-Host "Press any key to continue ..."
	$x = $host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
}
GetUpdateList
RemoveUpdates