Make mouse scroll horizontally
To make your mouse scroll horizontally in Windows 10, do the following: You can test how all this works in the example window below:
Mouse scrolls horizontally instead of vertically
If you are facing an issue where you find that the mouse scrolls horizontally, use these suggestions to fix the issue:
If you have the horizontal scroll bar displayed and hover the mouse pointer over the scroll bar, and then if you scroll the mouse wheel, you will see horizontal scrolling. Move your mouse pointer away from the scroll-bar and then move the mouse wheel. Or else see if you can disable the horizontal scroll-bar.Press the middle mouse button once and then move your pointer to scroll the page vertically. In the small circle which appears, the 2 arrows should be pointing Up-Down.Using the Search bar open Mouse Properties and see if you can find any setting there about this. Maybe your mouse or device driver has some capability which makes this possible. If there is such a setting, change it to suit your preference.If it happens in a particular program that is open, open its settings and see if there is any such option that you need to change.Use another mouse and see. If this behavior is not replicated, maybe the issue then is with the mouse.If it happened recently, maybe after you installed a software or some Updates, use System Restore to back and see.
Related read: Windows mouse scrolling automatically up or down. I hope this helps you. If something else did, please post a comment.