Update Otto in Windows

MarsAu · March 24, 2025, 8:43am

Hi there,

I am not able to update Otto on one of my Windows servers (Microsoft Server 2022 Datacenter). Can’t figure out why…

Any suggestions?

Mars

PS C:\Users\Administrator> iex ((New-Object System.Net.WebClient).DownloadString(‘https://downloads.ottomatic.cloud/ottofms/install-scripts/install-win.ps1’))
Downloading OttoFMS installer zip from https://console.ottomatic.cloud/downloads/ottofms/latest/win…
Extracting files from C:\Users\ADMINI~1\AppData\Local\Temp\2\ottoFMS_installer.zip to C:\Users\ADMINI~1\AppData\Local\Temp\2\Extracted…
Stopping OttoFMS…
Uninstalling OttoFMS…
Start-Process : This command cannot be run due to the error: The specified executable is not a valid application for
this OS platform…
At line:66 char:3
    Start-Process -FilePath $uninstallerPath -ArgumentList "--mod ...
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CategoryInfo : InvalidOperation: ( [Start-Process], InvalidOperationException

FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand
PS C:\Users\Administrator>

Polaris · June 17, 2025, 8:45am

Did you ever find a solution to this? I’m in the same position now, where I need to update from 4.6.2 to 4.11.0 but I can’t uninstall the previous version.
I tried both the command for latest version, but also the one for a specific version. No luck.
Then uninstalling manually with the uninstall-file, but Windows said that there was no app for that
When trying to uninstall using the control panel, it says that the app already seems to be uninstall (which it definitely wasn’t).

I tried to install the new version upon the existing one, and it does seem to work, but I got two errors in the process: the first one saying that there was a problem running the post-install step (probably starting the service) and then another one saying that there was an error creating the uninstallation file
And yes, it’s still not possible to uninstall OttoFMS from the server…