![]() ![]() This approach is more forgiving and will generally work correctly even if component referencing in the setup has been messed up. The most common approach, however, is to uninstall the older version completely and then install the new version afterwards. Specifically major upgrades allow the install of the new version to precede the uninstall of the old one! This scenario requires error free setups with component referencing done correctly. There are some additional challenges involved with major upgrades that can confuse things. You can allow downgrading a newer install with the older one being run (for example to ensure the version you got in your login script is the one on target systems).You can disallow installation of an older product on top of a newer one.You can uninstall the old product and install the new one.The upgrade table has a learning curve, it's a bit Greek sometimes, but it allows a great deal of flexibility in specifying upgrade behavior. The upgrade isn't an upgrade at all, but an uninstall of the existing product and an install of the new product. Major upgrades are in fact completely separate setups linked by logic specified in the Upgrade table telling Windows Installer how the "upgrade" should be performed. For a major upgrade the command line will always be the same - no need to use different command lines depending on whether it is an upgrade or a fresh install. I would use major upgrades instead of minor upgrades. The intention of the script is that even if there has not been any changes to the MSI, the developer can also run the script to easily revert back to "official" environment. Running msiexec /i first followed by a reinstall might work, but I'd like to avoid that if possible.ĮDIT: The reason /famus is needed is that these are developer machines, and someone might manually update the registry or register a different set of dlls. What parameters should I choose to make it do a fresh installation if the package was not yet installed, and to do a full reinstall if the package was already installed? If I leave out the REINSTALL=ALL, then it will do fresh installations, but will not do update/reinstall. If I use msiexec.exe /i REINSTALL=ALL it will do nothing if the MSI has not yet been installed on that machine. ![]() For example, Get-EvergreenApp -Name MicrosoftTeams returns both the 32-bit and 64-bit versions of the General and Preview release rings ot the Microsoft Teams installer.I have an internal MSI placed on a network drive, and I'd like to write a login script so that anyone on our network can get the MSI installed onto their machines, or to get it auto-reinstalled whenever the MSI is updated (which happens often). Where an application returns more than one object to the pipeline, you will need to filter the output with Where-Object or Sort-Object. Date - in some cases, Evergreen can return the release date of the returned version.Language - some application installers may support specific languages.The value of this property is often unique to that application ![]() Ring, Channel, and/or Release - some applications include different release rings or channels for enterprise use.In some instances, Type may return slightly different data Type - an application may return installer downloads in exe, msi, zip, format etc.Architecture - the processor architecture of the installer.Several applications may include additional properties in their output, which will often require filtering, including: Some downloads may be in other formats, such as zip that will need to be extracted before install These will be publicly available locations that provide installers in typically Windows installer formats, e.g., exe, msi. URI - a string property that is the download location for the latest version of the application. ![]() If you need these in a version format, cast them with
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