Sometimes an app fails to launch, and when you try to install the runtime to fix it, the installer says, "This product is already installed."
: Available for both x86 and x64 systems. Installation & Behavior Analysis windows desktop runtime 6.0
How to know for sure: When you launch an app, if you see an error like: Sometimes an app fails to launch, and when
They should be left installed unless a specific vendor or support engineer instructs to remove them as part of a repair procedure. Microsoft Learn Sometimes an app fails to launch
Windows Desktop Runtime 6.0 is for the first scenario. It includes the necessary libraries and components to launch and run those framework-dependent apps — specifically Windows Forms (WinForms) and Windows Presentation Foundation (WPF) desktop applications.