WixToolset.Dtf.WindowsInstaller.InstallerException: Une autre installation est en cours d’exécution. Terminez celle-ci avant d’effectuer cette installation.
   à WixToolset.Dtf.WindowsInstaller.Installer.CheckInstallResult(UInt32 ret) dans D:\a\wix\wix\src\dtf\WixToolset.Dtf.WindowsInstaller\Installer.cs:ligne 870
   à LaserficheInstaller.Preamble.<DoWork>d__12.MoveNext()
--- Fin de la trace de la pile à partir de l'emplacement précédent au niveau duquel l'exception a été levée ---
   à System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   à LaserficheInstaller.PreambleOrchestration.<DoWork>d__17.MoveNext()

In LFGet.log

We try to install those 6 products and we tried many different ways. We ended switching to your script from other thread but there is something that just don't work. Some products install and there is always a failure somewhere. I think it never ended installed thoses 6 products without any issue. I found this exception in LFGet.log

6 products:
WindowsClient,Snapshot,ScanningSetup,OCR,WebToolsAgent,OfficePluginSetup

The .msi logs seem to be overwrite each minute or so and but it never succeed probably because a previous step failed.

For case 2 it seem to just to end. Most cases throw this exception or seem to "end" at webtools agent.

Hi Maxime,

The error message translated to English is:

WixToolset.Dtf.WindowsInstaller.InstallerException: Another installation is running. Complete it before performing this installation. 2 at WixToolset.Dtf.WindowsInstaller.Installer.CheckInstallResult(UInt32 ret) in D:\a\wix\wix\src\dtf\WixToolset.Dtf.WindowsInstaller\Installer.cs:line 870 3 at LaserficheInstaller.Preamble.<DoWork>d__12.MoveNext() 4 --- End of stack trace from the previous location where the exception was thrown --- 5 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 6 at LaserficheInstaller.PreambleOrchestration.<DoWork>d__17.MoveNext()

The "PreambleOrchestration" likely refers to the Preamble section of each installation's package.manifest file that lists out packages to uninstall before running the main installation. For example, here's the package.manifest for product Snapshot :

{
    "ID":  "Snapshot",
    "Name":  "Snapshot",
    "Version":  "12.0.2509.942",
    "InstallerFile":  "Snapshot-x64.msi",
    "PackageType":  "LFMsi",
    "LaunchUnattended":  false,
    "RequiresElevation":  true,
    "Prereqs":  [
                    {
                        "Name":  "Visual C++ Redistributable for Visual Studio 2022 (x86)",
                        "Path":  "VC_redist.x86.exe",
                        "Commandline":  "/quiet /norestart",
                        "CheckType":  "Registry",
                        "CheckKey":  "SOFTWARE\\WOW6432Node\\Microsoft\\VisualStudio\\14.0\\VC\\Runtimes\\x86",
                        "CheckValue":  "Bld",
                        "CheckValueTarget":  "33810",
                        "CheckValueRelation":  "GE",
                        "RequiresElevation":  true
                    },
                    {
                        "Name":  "Visual C++ Redistributable for Visual Studio 2022 (x64)",
                        "Path":  "VC_redist.x64.exe",
                        "Commandline":  "/quiet /norestart",
                        "CheckType":  "Registry",
                        "CheckKey":  "SOFTWARE\\Microsoft\\VisualStudio\\14.0\\VC\\Runtimes\\x64",
                        "CheckValue":  "Bld",
                        "CheckValueTarget":  "33810",
                        "CheckValueRelation":  "GE",
                        "RequiresElevation":  true
                    }
                ],
    "Preambles":  [
                      {
                          "PreambleType":  "UninstallPackage",
                          "Data":  "{6D5DE936-AB30-4B38-9089-C2CFC3740616}",
                          "Scope":  1
                      },
                      {
                          "PreambleType":  "UninstallPackage",
                          "Data":  "{4634FEE5-E19B-4C52-9EBB-FE3E9D2816E9}",
                          "Scope":  1
                      },
                      {
                          "PreambleType":  "UninstallPackage",
                          "Data":  "{36596786-7877-494D-B8CD-9140E9BFAFDD}",
                          "Scope":  1
                      },
[truncated a bunch of other "UninstallPackage" preambles]
                      {
                          "PreambleType":  "UninstallPackage",
                          "Data":  "{58F26869-0624-4054-9688-95D581D69DA4}",
                          "Scope":  1
                      }
                  ]
}

I believe the data fields are product GUIDs for older versions of the application that correspond with potential entries you'd find in registry paths:

• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
• HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall

Of the 6 products you listed, only WindowsClient and Snapshot have preambles. This might mean LFGet is trying to uninstall the existing version of WindowsClient and/or Snapshot, that's failing/hanging for some reason (maybe because a user has the application is running and needs to be closed first), and then the other installations are failing because the uninstall (which Windows considers an "installation in progress") is stuck.

It's also possible that an installation from a prereq like .NET Framework 4.8 is stuck (sometimes happens with the .NET or Edge WebView2 runtime online installers when the machine can't download the package from Microsoft over the internet), which is also an "installation in progress" to Windows and could a Laserfiche preamble uninstall.

I would be curious if you still experience the error if you run the LFGet installation on a machine without older versions of the software installed. A good test case would be:

1. Manually uninstall the Laserfiche client applications from a machine you encountered the errors on with LFGet
2. Reboot the machine
3. Run the same LFGet installation as before and see if you get the error