Group Policy of .MSI file

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Group Policy of .MSI file
MSI File distribution with Group Policy 
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Tim Kempster




Posts: 3
Joined: 2025-09-24
I have two products which my customers install both built with add-in express. One for Microsoft Word the other for Microsoft Outlook. In a recent install the customer shipped the MSI via group policy (not running the setup.exe). In both case we use the recommended Microsoft installer project but in the Word add-in we have it setup for all users but the Outlook one it's on a user by user basis.

When the customer shipped the Word add-in (all users) MSI via group policy it installed properly on all machines. When they tried the same with the Outlook addin (per user) it failed to load on all machines. All the client machines were windows 11 running a recent version of Office (I think office 365). The .Net version I built with is supported by the clients.

Is this down to some sort of group policy problem or something else maybe? Both add-ins are built with very similar libraries etc.

Is there an easy way to debug this rollout problem. The customer has so far failed to give me the adxloader.log file but I'll keep trying to get hold of it.

Thanks in advance
Posted 22 Nov, 2025 16:32:35 Top
Andrei Smolin


Add-in Express team


Posts: 19182
Joined: 2006-05-11
Hello Tim,

I'd start with obtaining the adxregistrator.log file the installer creates/updates when being run; it is created by default. This log file should show whether the add-in registration was performed or not; if it was, the log should show the result of registration. If the adxregistrator.log file is missing, this may mean that the problem occurred on a previous stage; if so, the problem would relate to the installer itself or to the way the installer was started. In this case it would be great if the customer provides the MSI log; a typical command line would be msiexec.exe /L*v log.txt /i MyInstaller.msi - it produces the log.txt file in the folder where the MSI file locates; see also https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/msiexec.

Regards from Poland (GMT+1),

Andrei Smolin
Add-in Express Team Leader
Posted 24 Nov, 2025 12:57:45 Top