This post is part of an ongoing series about using SCUP to publish 3rd party updates in MEMCM. Previous posts on SCUP and 3rd party updates:
- Using System Center Update Publisher to Create 3rd Party Updates: Intro
- Using SCUP to Create 3rd Party Updates: Publish an Update
With your workforce likely working from home under COVID-19 lockdown, it’s more important than ever to ensure that your patching is up-to-date, to include 3rd party updates. It’s not enough anymore to just ensure that Windows is patched.
This post will focus on a method to deploy updates that require a script or wrap. You may need to script the update’s install to remove a previous version, remove desktop shortcuts, or perform a post-installation configuration. This is not possible by default, as SCUP only accepts and deploys single-file EXE or MSI files. We will use 7zip to create a self-extracting archive and the sign tool from the Windows SDK.
The blog was put together using MEMCM 2002 and SCUP 6.0.394.0, available here: https://www.microsoft.com/en-us/download/details.aspx?id=55543.
This can be complicated and will require a few things in addition to MEMCM and SCUP. To complete this process you will need to acquire the following items. We’re going to use
- Code-signing certificate. This can either be a code-signing certificate from a public CA (GoDaddy, etc.) or a code-signing certificate from a local CA. If you use a local CA, your clients will need to trust it (including the workstation/server running SCUP, ConfigMgr primary server, and SUP), either by importing it directly on clients, or ensuring that the proper root certificates are installed.
- SignTool.exe. You will need to download and install the Windows SDK, available here: https://developer.microsoft.com/en-us/windows/downloads/windows-10-sdk/. Signtool.exe is also installed with Visual Studio.
- 7zip, available here: https://www.7-zip.org/.
- 7zSD.sfx. This is 7zip’s self-extractor. It is available here: https://www.7-zip.org/a/7z920_extra.7z. This will download a 7zip archive file; extract this archive and save the 7zSD.sfx file.
Create Self-Extracting Archive
Now that we have all of the tools we need, it’s time to make our archive. I’m going to use Adobe Reader as my example. I need to completely uninstall Reader before installing the new version, so this action must be scripted. The wrapper script can be either a bat file or PowerShell script.
- Create and test your wrapper script. If you use a bat file as your wrapper, name it execute.bat and proceed to step 3.
- If your wrapper script is a PowerShell script, then create a bat file called execute.bat. Paste this into the bat file (I would test it again, just for good measure):
powershell.exe -noprofile -executionpolicy bypass -command "& '%~dp0<name of script>.ps1'"
- Copy all source files, including installation files and the wrapper script, to a folder. In my example, I’ve named the folder source-files.
- Right-click on the source-files folder, select 7-Zip, then Add to “source-files.7z”.
- Copy the 7zSD.sfx file to the same directory as source-files.7z.
- Create a text file in this directory called config.txt.
- In this file, paste the following text.
- Open a cmd prompt and cd to your working directory.
- Run this command to build the self-extracting archive: copy /b 7zSD.sfx + config.txt + source-files.7z < self-extracting exe name>.
- CD to the directory where signtool.exe installed. By default, this directory is C:\Program Files (x86)\Windows Kits\10\bin\<version>\x64.
- Run this command to sign the EXE: signtool.exe sign /a /v <path to exe>\<exe>. If you have the code-signing certificate imported properly, signtool.exe will automatically select it and use it to sign the EXE.
- Import the EXE into SCUP as described in Using SCUP to Create 3rd Party Updates: Publish an Update. There are no parameters for EXE.
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