This has already been posted in GOG Galaxy thread (the client is named GAlaxy and not GOG btw - GOG is just the firm behind it) by a blue here. The problem is probably not solved by turning of the auto start either in GOG Galaxy settings or via msconfig. The problem with WIn10 as already said here in this thread, is that Windows is auto starting the applications that weren't shut down the last time windows was running.

I'm.... not entirely sure what fast boot has to do with what I'm referring to. I was referencing the last big content update from MS that they talk about in this thread here: https://www.gog.com/forum/general/how_to_properly_prevent_gog_galaxy_from_running_on_startup.
(And in a few other threads recently.)

It changes the behavior of windows where no matter if a program is labeled to start up with windows or not, if it was running when the machine was shut down, windows will restart it when the machine is booted back up.
Said behavior can be changed, I believe, but I'm not sure how since I don't run win 10.

Here you can find some solutions as how to disable this behaviour (imo tha last post seems to be the best solution):

https://superuser.com/questions/1229963/windows-10-disable-reopening-programs-after-restart-startup

I'm a bit confused. Some said earlier in this thread that "like all Windows 10 features", it is easy to just switch off, but the suggestions on that page seem anything but simple and straightforward.

By the last post, do you mean the suggestion of creating a script that deletes something from the registry at every log off? Yikes... :D I guess that works until MS again changes its behavior a bit.

EDIT: Ok I saw your earlier message too that apparently this wasn't about the same thing that the earlier posters thought.

I don't use windows10 myself so all I could provide is what I found by simply googling it. As far as I could see there should be a simpler way to turn this feature off but many reported it did not work so maybe this is just a bug on MS end that might be fixed with a future update. However GOG already replied in Galaxy thread that they at least will provide a fix for Galaxy starting every time even if this MS feature is implemented with the next Galaxy update ao at least GOG users should not have the need to be angry about this - this is pure MS. Yes, I meant that script suggestion. The registrey key values are clearly defined. So this script is only shutting down all running applications before shutting down the PC. Should help with the problem until MS fixes it. The other easy solution would be in the same thread and it's a simple command line shutting down the PC with anything running closing before doing that - but I would not want to click on a batch file instead of using the start menu ... maybe this is purely subjective. I did not search much further but I am quite sure that other solutions would turn out to be similar.

You're the man.

That is the answer. Thanks.

So, I'm seeing a lot of people report that Win 10 reopens programs that are open when you close down Win 10. I tested this multiple times, and it doesn't do that for me.

Not to derail the thread, but Windows 10 doesn't do half the stuff you all say it does. <3

You should mark mine as the answer. Never actually helped anyone here yet successfully. ;)

He didn't make it a question thread, so you're out of luck. :)

It was introduced in one of the last updates afaik - don't even know if this update was applied to all windows 10 versions or only sepcial versions - so maybe you just did not receive this update? The problem ist in fact very real and is discussed in multiple forums.

I don't doubt you guys. It's just that no one I know IRL has this happen. I wonder if they experiment with regional updates?

My dreams are crushed. ;)

That's a pet peeve of mine when people start question threads, they leave them unmarked.