This is happening to me as well after I upgraded to version 12.2.2.7037 a couple of days ago, except it happens about every 30 minutes to 1 hour. Overnight, one of my PCs generated 15+ such pop-up windows that I had to close. It fails at the final step of "Downloading updates". All this is despite turning off "Check for program updates". It simply ignores that setting. I haven't uninstalled/reinstalled yet to see if that will fix the issue. Will be doing that soon.
Separately, I upgraded to 12.2.2.7062 on another PC, and I am having different issues (that seem to appear on both v..7037 and v...7062) that i will post in a separate thread.
Thanks.