Automate Downloading SQL Cumulative Updates

Those of us admins that download each SQL Cumulative Update when it comes out may find this script handy. When you request a CU from Microsoft, you get this plain text email with links and passwords. Each link is to a different self-extracting zip file with the corresponding password below it.

When a CU has many files, it becomes a long series of point-and-click to download them all. Then you have to manually put in the password to each file in order to extract it. I wanted an easier solution.



& '.\Download SQL CU.ps1' "hotfix.msg" "C:\Download\SQL CUs\2008\CU2"

Be sure to either run the script in the directory you want to download or provide a second argument.

Update: I had to make a slight tweak to the argument checking.


[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.Office.Interop.Outlook") | Out-Null
Import-Module BitsTransfer
$7zipPath = "C:\Program Files\7-Zip\7z.exe"
if($args.Length -gt 0) {$file = Resolve-Path $args[0]}
else {Write-Host "Must supply a Cumulative Update email in .MSG format"}
if($args.Length -gt 1) {$destDir = Resolve-Path $args[1]}
else {$destDir = "."}
Write-Host "Downloading to `"$destDir`""
if(-not(Test-Path $7zipPath)) {Write-Host "Path to 7zip must be specified in order to extract"}
$ol = New-Object -comObject Outlook.Application
$mail = $ol.Session.OpenSharedItem($file)
$body = $mail.Body
$filePasses = $b = $null
$body.Split("`r`n") | ?{$_.startswith("Location") -or $_.startswith("Password")} | %{
    if ($_.StartsWith("Location")) {
        $fileUrl = $_.Substring($_.IndexOf("(")+1, $_.LastIndexOf(")")-$_.IndexOf("(")-1)
        $pass = $null
    if ($_.StartsWith("Password")) {
        $pass = $_ -replace "^Password: "
    if ($fileUrl -ne $null -and $pass -ne $null) {
        $fileName = $fileUrl.Substring($fileUrl.LastIndexOf("/")+1)
        $filePasses += @{$fileName = $pass}
		$filePath = Join-Path $destDir $fileName
        if(-not (Test-Path $filePath)) {
            $fileUrlAbbr = $fileUrl.Substring(0, $fileUrl.IndexOf("/", 7)) + "/.../" + $fileName
            Write-Host "Adding `"$fileUrlAbbr`" to BITS"
            #(New-Object System.Net.WebClient).DownloadFile($fileUrl, $fileName)
            if ($b -eq $null) {
                $b = , (Start-BitsTransfer -Source $fileUrl -Destination $destDir -Suspended -Asynchronous -Priority High -DisplayName $fileName)
            } else {
                #Add-BitsFile -BitsJob $b -Source $fileUrl -Destination $destDir | Out-Null
                $b += Start-BitsTransfer -Source $fileUrl -Destination $destDir -Suspended -Asynchronous -Priority High -DisplayName $fileName
        else {Write-Host "`"$fileName`" already exists"}
#$b | Get-BitsTransfer | Format-Table -Property DisplayName, JobState
$b | Resume-BitsTransfer -Asynchronous
#loop through transfers and complete any that have finished
#  and resume any that errored
#  recheck every minute
while ($b | Get-BitsTransfer -EA SilentlyContinue) {
    $b | Get-BitsTransfer -EA SilentlyContinue | ?{$_.JobState -eq "Error"} | Resume-BitsTransfer -Asynchronous
    $b | Get-BitsTransfer -EA SilentlyContinue | ?{$_.JobState -eq "Transferred"} | Complete-BitsTransfer
    Start-Sleep -s 60
# Do file extraction
if(Test-Path $7zipPath) {
    $filePasses.keys | %{
        if(Test-Path $_) {
            if($_.Contains("i386")){$outDir = "-oi386"}
            elseif($_.Contains("x64")){$outDir = "-ox64"}
            elseif($_.Contains("ia64")){$outDir = "-oia64"}
            else{$outDir = "."}
            $pass = "-p" + $filePasses.$_
            & $7zipPath x $_ $pass $outDir "-aos"

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