Disable Automatic Updates with PowerShell

Here's a couple functions to set and get Windows Update configurations

$SCRIPT:AutoUpdateNotificationLevels= @{   0="Not configured"; 1="Disabled"; 2="Notify before download";3="Notify before installation"; 4="Scheduled installation"}$SCRIPT:AutoUpdateDays=@{0="Every Day"; 1="Every Sunday"; 2="Every Monday"; 3="Every Tuesday"; 4="Every Wednesday";5="Every Thursday"; 6="Every Friday"; 7="Every Saturday"}Function Get-WindowsUpdateConfig{    $AUSettings = (New-Object -com "Microsoft.Update.AutoUpdate").Settings    $AUObj = New-Object -TypeName System.Object    Add-Member -inputObject $AuObj -MemberType NoteProperty -Name "NotificationLevel"  `               -Value $AutoUpdateNotificationLevels[$AUSettings.NotificationLevel]    Add-Member -inputObject $AuObj -MemberType NoteProperty -Name "UpdateDays" `               -Value $AutoUpdateDays[$AUSettings.ScheduledInstallationDay]    Add-Member -inputObject $AuObj -MemberType NoteProperty -Name "UpdateHour"   `               -Value $AUSettings.ScheduledInstallationTime     Add-Member -inputObject $AuObj -MemberType NoteProperty -Name "Recommended updates" `               -Value $(IF ($AUSettings.IncludeRecommendedUpdates) {"Included"}  else {"Excluded"})    $AuObj } Function Set-WindowsUpdateConfig{Param ([Parameter()][ValidateRange(0,4)][int]$NotificationLevel , [Parameter()][ValidateRange(0,7)][int]$Day, [Parameter()][ValidateRange(0,24)][int]$hour, [Parameter()][bool]$IncludeRecommended) $AUSettings = (New-Object -com "Microsoft.Update.AutoUpdate").Settings if ($NotificationLevel)  {$AUSettings.NotificationLevel        =$NotificationLevel} if ($Day)                {$AUSettings.ScheduledInstallationDay =$Day} if ($hour)               {$AUSettings.ScheduledInstallationTime=$hour} if ($IncludeRecommended) {$AUSettings.IncludeRecommendedUpdates=$IncludeRecommended} $AUSettings.Save()} 

Here is a link and how to set the registry settings

# http://support.microsoft.com/kb/328010New-Item HKLM:\SOFTWARE\Policies\Microsoft\Windows -Name WindowsUpdateNew-Item HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate -Name AUNew-ItemProperty HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU -Name NoAutoUpdate -Value 1

you can use CMD command:

 sc stop wuauserv