My rudimentary Win10 setup is such a gaming-only system, only Apps installed are Steam, GoG, Epic and Origin. The Spam that comes from those apps aside (mostly sales popup banners/notifications), I still receive the occasional "Your windows is at risk because you don't use OneDrive", or "Windows Defender has not found anything" or "Hey, this is our new Edge browser we installed and placed a shortcut on your desktop, want to make it your default browser now?" spam.

Some of that can be disabled with "O&O ShutUp10" or with some of the debloating scripts various people have created over time also mentioned in this thread.

Yes you can alaways mod the system, but please re-read the thread. I answered to the question what spam windows generates. Saying there is no spam because you can run a script to minimize, is like saying you don't receive spam mails because you run a spamfilter.

I get what you mean. I fought a similar battle back in 2013 when a document was proposed to the IETF, never ratified but yet network engineers everywhere adopted it and the anti-spam industry exploded. I somethings think these things are under-engineered on purpose so that friends of friends can create new business models.

Driver popups. I made the mistake of buying a razer keyboard and microsoft update itself is pushing to download their companion app each time it does an update. It's a thing, look it up. There are workarounds but they don't survive multiple rounds of updates.

I roughly followed the steps comment "NuttyX" mentioned about disabling autorun years ago and I haven't seen a Razer nag since.

Bonus: disabling autorun is better security!

I’ll try it. I followed the advice of a razer employee who messaged me on Reddit and it worked for a while.

I have a razor mouse and this has never happened to me.

Then I envy you. It’s not some big secret but it definitely happens with my keyboard. Maybe it’s loading it from the keyboard itself? Either way it only happens during windows updates

Probably push notification spam enabled by some laptop makers by default.