We have a a fair few desktops/laptops where by the users are admins and have installed their own apps. But this has left us now with old outdated apps on their devices. So looking at a proactive way to manage these apps, I decided to add some to Intune (windows store app new) for example Firefox which I want to install 123.0.0 however the devices checked in as installed but 122.0.0.

Having checked the store, the latest version is 123.0.0, so it appears not to be updating them?

The devices are joined to the domain, checking in fine. The apps were originally not installed from the store so maybe this is the reason? They are also not signed into the windows store on their device, is this really needed? I've ensured their devices have auto update checked in the store too.