I spent a good 20 minutes trying to remove copilot from my windows 10 machine last night. It embedded itself into the taskbar, the edge explorer, and I finally had to go into system components to disable it. No doubt there will be another ms update that will revert all these settings again
My pc is old unfortunately. I'd hate to upgrade it to support win11 jsut to disable all the ai crap. But I hate that my old pc keeps getting updates with copilot without me asking for copilot.
On Windows 11 at least, the taskbar button toggle is in the taskbar settings, the second place you'd expect to find it (the first being the right-click menu on the button itself, though there isn't one). I'm not aware of anything called Edge Explorer, but it looks easy enough to disable in Edge, and I've never seen it in Explorer.