Forget about logs that will tell you about the plight of one on user. Let's get to the reasons behind an issue that affects many users.
And I, and others, have asked many times for an explanation as to why we have to download X1 three times for three PCs and every time we want to reinstall it.
If there is a good reason, fine. But not knowing it we are left with the suspicion that it is, like certain security regimes, another of those "stuff the customer, protect the company" decisions.