The issue should be assigned to JENKINS project (native windows package)

Is it really an expectation on Windows that uninstalling an application removes all user data?

Typically Windows installers do not remove user data. The removal process most familiar to me is that all files registered through the MSI install process are removed by the uninstall process. User data does not usually exist at initial install, so it cannot be registered with the MSI install process.

However, they also do not place user data in the "Program Files" structure. It is more common that "Program Files" is just for the executables, so user data is not there to be removed.

I'm not sure what the Jenkins Windows installer does, though I assume it places some user data in the C:\Program Files\Jenkins directory (based on this bug report).

jenkins.wxs file does not define specific uninstaller handlers.
See https://github.com/jenkinsci/jenkins/blob/master/msi/jenkins.wxs

It means that only explicitly defined package contents (e.g. jenkins.exe) will be deleted.

I'm not sure if this issue is a bug or an improvement, but Windows apps usually ask if the user wants to delete created files. After that, they forget to clean up their garbage

Hi
Thanks for the reply
Normally user data is stored under c:\users\username\AppData\AppName etc
It seems nicer to me if the uninstall would remove the "C:\Program Files\Jenkins" folder. Or maybe it could have an option as part of the uninstaller to ask the user the question?

Thanks

Modified the issue's description.

There are log files and such that are in the installation directory, these will not be removed during uninstall because they are not created by the install. I think this is pretty standard.