Mac Mouse Scroll Not Working -

When hardware and basic settings are ruled out, the problem may lie deeper within the software architecture. Conflicting third-party applications are a common, yet overlooked, cause of scrolling failure. Utility apps like "Scroll Reverser," "BetterTouchTool," or USB Overdrive are popular for enhancing mouse functionality, but they can conflict with macOS updates or other background processes, causing the scroll input to freeze. Additionally, a corrupted Bluetooth preference file or a pending macOS update can break the link between the hardware and the operating system. In these cases, checking for system updates, safe-booting the Mac to isolate third-party interference, or deleting specific .plist (property list) files may be necessary to restore order.

And if you’re a Magic Mouse user wondering why a $100 device sometimes forgets how to scroll? That’s the secret: It doesn’t forget. macOS just occasionally loses the conversation. The fixes above bring the signal back every time. mac mouse scroll not working

Further research is recommended to:

If you use a Logitech mouse with Logi Options+ , a Razer mouse with Synapse, or any advanced configuration software, When hardware and basic settings are ruled out,