Zero-config MSI not working with new version of app w/ same product code

The Toolkit General Discussion
1

Hi, I’m trying to do a zero-config MSI deployment to upgrade an existing install to a newer version. The log detects the MSI and checks for the product code, finds that the product code w/ an older version exists, but then decides the app is already installed and exits w/o running the install. Is this normal? I would think a feature like this would be designed to recognize a newer version of an app w/ the same product code and upgrade?

Here’s the relevant section of the install log:

|[Initialization] :: Discovered Zero-Config MSI installation file [C:\Windows\ccmcache\1lu\Files\Teams_windows_x64.msi].|PSAppDeployToolkit|10/9/2024 3:32:36 PM|11124 (0x2B74)|
|---|---|---|---|
|[Installation] :: Reading data from Windows Installer database file [C:\Windows\ccmcache\1lu\Files\Teams_windows_x64.msi] in table [Property].|Get-MsiTableProperty|10/9/2024 3:32:37 PM|11124 (0x2B74)|
|[Installation] :: Getting information for installed Product Code [{731F6BAA-A986-45A4-8936-7C3AAAAA760B}]...|Get-InstalledApplication|10/9/2024 3:32:37 PM|11124 (0x2B74)|
|[Installation] :: Found installed application [Teams Machine-Wide Installer] version [1.4.0.4167] matching product code [{731F6BAA-A986-45A4-8936-7C3AAAAA760B}].|Get-InstalledApplication|10/9/2024 3:32:39 PM|11124 (0x2B74)|
|[Installation] :: Skipped 101 entries while searching, because they were considered Microsoft updates.|Get-InstalledApplication|10/9/2024 3:32:39 PM|11124 (0x2B74)|
|[Installation] :: The MSI is already installed on this system. Skipping action [Install]...|Execute-MSI|10/9/2024 3:32:39 PM|11124 (0x2B74)|
|[Post-Installation] :: Bypassing Close-InstallationProgress [Mode: NonInteractive]|Close-InstallationProgress|10/9/2024 3:32:39 PM|11124 (0x2B74)|
|[Post-Installation] :: MicrosoftCorporation_TeamsMachine-WideInstaller_1.6.0.1381_EN_01 Installation completed with exit code [0].|Exit-Script|10/9/2024 3:32:39 PM|11124 (0x2B74)|
2

This sort of situation is relatively rare as most use the major upgrade approach. This could certainly be improved in future, but for now your best bet is to not use zero-config for this app.

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