I have a WPF application that has two builds, one is beta and another is stable.

The user can have both of them installed at the same time, each within its own folder in %localappdata% (%localappdata%\app-name and %localappdata%\app-name (beta).

When they are both installed at the same time, Windows groups them on the taskbar as if being the same application.

So, the apps are not binary-equal, they reside in different directories and they do not have the same title. But there's obviously a piece of information that's shared between the two apps which is what Windows uses to determine how to group the apps, but I don't know what piece of information that is.

What is that piece of information which I need to change for one of them so that they can be properly distinguished by Windows in order for each to have its own taskbar item?

CodePudding user response：

The GUID in assembly info:

You should create a different GUID for each version

CodePudding user response：

The taskbar grouping is based on the Application User Model IDs (AppUserModelIDs). If you don't specify one then Windows will generate one for you using undocumented details.

You can p/invoke SetCurrentProcessExplicitAppUserModelID to set a specific one for the whole process. It is also possible to set one per window.