Installing hotfixes on a 2008 R2 server remotely via command line

Psxec.exe and wusa.exe can be used to remotely install updates on a server, when you don’t have any kind of console access. This could also be used on a server core installation, or where you wanted to quickly deploy a patch to multiple machines.

I was recently in a situation with a couple of servers where ILO was not working due to a firewall issue, and SP1 for Windows Server 2008 R2 had broken RDP, requiring the RDP hotfix Windows6.1-KB2667402-v2-x64.msu ( So I had to install the hotfix but had no console access.

In this case you can use a combination of psexec.exe – a sysinternals utility for executing commands remotely (, combined with wusa.exe, the Windows Update Stand-alone Installer ( You can do this as follows:

  1. Copy the hotfix to the drive of the machine you want to install the patch on e.g. to c:\temp
  2. Download psexe.exe to a machine which you do have access to.
  3. Run the command:
D:\Scripts\psexec.exe -s <a href="file://\\server">\\server</a> wusa.exe "c:\temp\Windows6.1-KB2667402-v2-x64.msu" /quiet

Note the following:

  • Look in the Setup eventlog for results.
  • Add the /norestart switch if you do not want the remote machine to reboot automatically after the patch install.
  • If the command exits with Error code 1641, that is a success and the machine should reboot if it needs to.
  • The –s switch for psexec runs with required permissions.

Backinfo PowerShell script

Here is a quick script that will copy backinfo.exe to a PC and create a registry setting to run at logon.

Put Backinfo.exe and Backinfo.ini in a folder called Backinfo (e.g. c:\temp\Backinfo) and run this script from the temp folder.

robocopy.exe Backinfo "C:\Program Files\Backinfo"

New-ItemProperty -Path "HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run" -Name BackInfo -Type String -Value "C:\Program Files\BackInfo\Backinfo.exe"
#Run it now
CD "C:\Program Files\BackInfo"

I run it using a batch file from the same location:

powershell.exe -executionpolicy Bypass -file ./backinfo.ps1

Also see my other post for more info and to download backinfo –

Here is a complete file with the scripts, batch file and backinfo files. Just extract it somewhere and run the batch file: backinfo