Apple’s "Natural Scrolling" mimics a touchscreen: swipe up to move content down. Many users accidentally toggle this off.
Have a fix that worked for you that isn't listed? Let us know in the comments below. magic mouse not scrolling
If you have tried everything above and it still won’t scroll, you may have a third-party app conflict. Apps like "BetterTouchTool," "Scroll Reverser," or mouse acceleration utilities can sometimes conflict with system updates. Apple’s "Natural Scrolling" mimics a touchscreen: swipe up