Because the Magic Mouse uses a touch-sensitive surface rather than a mechanical scroll wheel, it relies on optical sensors to detect finger movement. If your cursor moves fine but scrolling doesn't work, the sensors are likely dirty.
If you use an app like , BetterTouchTool , or LinearMouse , check that the app is running correctly. Sometimes these apps crash in the background, leaving the scroll function disabled. Try quitting the app to see if scrolling returns to normal. apple mouse not scrolling
If the hardware is clean and settings are correct, the issue likely lies within macOS system files. 'Magic' mouse does not scroll - Apple Support Community Because the Magic Mouse uses a touch-sensitive surface
: Switch the mouse off and back on using the toggle on the bottom. apple mouse not scrolling