diff --git a/powershell/Invoke-WindowsUpdate.ps1 b/powershell/Invoke-WindowsUpdate.ps1
new file mode 100644
index 0000000..7c1a51b
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+++ b/powershell/Invoke-WindowsUpdate.ps1
@@ -0,0 +1,138 @@
+###########################################################################"
+#
+# NAME: Invoke-WindowsUpdate.ps1
+#
+# AUTHOR: Jan Egil Ring
+# EMAIL: jan.egil.ring@powershell.no
+#
+# COMMENT: Script to download and install updates from Windows Update/WSUS. Reporting and rebooting may be customized.
+#          For more details, see the following blog-post: 
+#          http://blog.powershell.no/2010/06/25/manage-windows-update-installations-using-windows-powershell
+#
+# You have a royalty-free right to use, modify, reproduce, and
+# distribute this script file in any way you find useful, provided that
+# you agree that the creator, owner above has no warranty, obligations,
+# or liability for such use.
+#
+# VERSION HISTORY:
+# 1.0 25.06.2010 - Initial release
+#
+###########################################################################"
+
+#Requires -Version 2.0
+
+#Variables to customize
+$EmailReport = $false
+$FileReport = $true
+$To = "it-reports@domain.com"
+$From = "powershell@domain.com"
+$SMTPServer = "smtp.domain.local"
+$FileReportPath = "~\Windows Update Logs\"
+$AutoRestart = $true
+$AutoRestartIfPending = $true
+
+$Path = $FileReportPath + "$env:ComputerName" + "_" + (Get-Date -Format dd-MM-yyyy_HH-mm).ToString() + ".html"
+
+#Testing if there are any pending reboots from earlier Windows Update sessions
+if (Test-Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired"){
+
+#Report to e-mail if enabled
+	if ($EmailReport -eq $true) {
+		$pendingboot = @{$false="was pending for a restart from an earlier Windows Update session. Due to the reboot preferences in the script, a reboot was not initiated."; $true="was restarted due to a pending restart from an earlier Windows Update session."}
+		$status = $pendingboot[$AutoRestartIfPending]
+			$messageParameters = @{                        
+				Subject = "Windows Update report for $env:ComputerName.$env:USERDNSDOMAIN - $((Get-Date).ToShortDateString())"                        
+					Body = "Invoke-WindowsUpdate was run on $env:ComputerName, and the server $status `nPlease run Invoke-WindowsUpdate again when the server is rebooted."               
+					from = $From                        
+					To = $To                      
+					SmtpServer = $SMTPServer                         
+			}                        
+		Send-MailMessage @messageParameters -BodyAsHtml
+
+#Report to file if enabled
+			if ($FileReport -eq $true) {
+				"Invoke-WindowsUpdate was run on $env:ComputerName, and the server $status `nPlease run Invoke-WindowsUpdate again when the server is rebooted." | Out-File -FilePath $path
+			}
+
+#Reboot if autorestart for pending updates is enabled
+		if ($AutoRestartIfPending) {shutdown.exe /t 0 /r }  }
+		exit
+
+}
+
+#Checking for available updates
+$updateSession = new-object -com "Microsoft.Update.Session"
+write-progress -Activity "Updating" -Status "Checking available updates"   
+	$updates=$updateSession.CreateupdateSearcher().Search($criteria).Updates
+$downloader = $updateSession.CreateUpdateDownloader()          
+	$downloader.Updates = $Updates
+
+#If no updates available, do nothing
+	if ($downloader.Updates.Count -eq "0") {
+
+#Report to e-mail if enabled
+		if ($EmailReport -eq $true) {
+			$messageParameters = @{                        
+				Subject = "Windows Update report for $env:ComputerName.$env:USERDNSDOMAIN - $((Get-Date).ToShortDateString())"                        
+					Body = "Invoke-WindowsUpdate was run on $env:ComputerName, but no new updates were found. Please try again later."               
+					from = $From                        
+					To = $To                      
+					SmtpServer = $SMTPServer                         
+			}                        
+			Send-MailMessage @messageParameters -BodyAsHtml
+		}
+
+#Report to file if enabled
+		if ($FileReport -eq $true) {
+			"Invoke-WindowsUpdate was run on $env:ComputerName, but no new updates were found. Please try again later." | Out-File -FilePath $Path
+		}
+
+	}
+else
+{
+#If updates are available, download and install
+	write-progress -Activity 'Updating' -Status "Downloading $($downloader.Updates.count) updates"  
+
+		$Criteria="IsInstalled=0 and Type='Software'" 
+		$resultcode= @{0="Not Started"; 1="In Progress"; 2="Succeeded"; 3="Succeeded With Errors"; 4="Failed" ; 5="Aborted" }
+	$Result= $downloader.Download()
+
+		if (($Result.Hresult -eq 0) –and (($result.resultCode –eq 2) -or ($result.resultCode –eq 3)) ) {
+			$updatesToInstall = New-object -com "Microsoft.Update.UpdateColl"
+				$Updates | where {$_.isdownloaded} | foreach-Object {$updatesToInstall.Add($_) | out-null 
+				}
+
+			$installer = $updateSession.CreateUpdateInstaller()       
+				$installer.Updates = $updatesToInstall
+
+				write-progress -Activity 'Updating' -Status "Installing $($Installer.Updates.count) updates"        
+
+				$installationResult = $installer.Install()        
+				$Global:counter=-1       
+
+				$Report = $installer.updates | 
+				Select-Object -property Title,EulaAccepted,@{Name='Result';expression={$ResultCode[$installationResult.GetUpdateResult($Global:Counter++).resultCode ] }},@{Name='Reboot required';expression={$installationResult.GetUpdateResult($Global:Counter++).RebootRequired }} |
+				ConvertTo-Html
+
+#Report to e-mail if enabled
+				if ($EmailReport -eq $true) {
+					$messageParameters = @{                        
+						Subject = "Windows Update report for $env:ComputerName.$env:USERDNSDOMAIN - $((Get-Date).ToShortDateString())"                        
+							Body =  $Report | Out-String                 
+							from = $From                        
+							To = $To                      
+							SmtpServer = $SMTPServer                         
+					}                        
+					Send-MailMessage @messageParameters -BodyAsHtml
+				}
+
+#Report to file if enabled
+			if ($FileReport -eq $true) {
+				$Report | Out-File -FilePath $path
+			}
+
+#Reboot if autorestart is enabled and one or more updates are requiring a reboot
+			if ($autoRestart -and $installationResult.rebootRequired) { shutdown.exe /t 0 /r }       
+		}
+}
+