Best Practices for Self Updating Desktop Application in a network environment

Question

I have searched through google and SO for possible answers to this question, but can only find small bits of information scattered around the place, most of which appear to be p

Answer 1

One best practice that many software overlook: ask to update when the user is closing your application, NOT when it has just launched it.

It's incredible how many apps don't do that (Firefox, for example). You just ran the app, you want to use it now, and instead, it prompts you if you want to update, which of course is going to take 5 minutes and require restarting the app.

This is non-sense. Just do the update at the end.