The Windows scroll inactive windows setting changes how a wheel behaves when the pointer rests over a window that is not active. It can make a two-window desk easier to use, or make a page move when you expected the wheel to act elsewhere. Decide which behaviour suits your work before blaming the mouse.
Quick Answer
Windows scroll inactive windows lets the wheel act on an inactive window when you hover over it. Inspect that option in Mouse settings, then test two windows with the pointer held over the intended page. Changing the preference costs R0; the MARVO WS005 reference cost R179 in the 8 October catalogue read as a separate hardware reference.
🪟 Reproduce the hover behaviour
Open two windows with scrollable content and leave one active. Move the pointer over the other without clicking it, then turn the wheel. Observe which content moves and whether the result matches what you want from the desk. Use a simple example before testing a complex application.
This comparison separates wheel routing from physical movement of the mouse. It also helps you describe a complaint accurately: scrolling the window under the pointer is different from a wheel failing to produce input. Keep the same windows and content for the next step.
⚙️ Choose the setting deliberately
In Windows Mouse settings, inspect Scroll inactive windows when hovering over them. Note the current state, change it for the comparison and repeat the same hover test. Choose the behaviour that makes switching between your actual tasks comfortable.
Do not assume every application handles a wheel event identically. An application can have its own scrolling behaviour, and some content is not scrollable in the way you expect. If the setting works in a simple window but the problem remains in one program, focus the next investigation on that program rather than replacing the mouse immediately.

🖱️ Keep keyboard focus separate
Hover scrolling does not mean that every kind of input now belongs to the hovered window. Click deliberately when you intend to type into a document or field. This matters when working with an account page beside a chat window or moving between study notes and a browser.
If the remaining issue is a physical wheel fault, compare gaming mice or all mice according to fit and connection needs. The R179 combo read provides a dated local reference, while the system preference is free. Buy for a demonstrated equipment need after the hover behaviour is understood.
Frequently Asked Questions
What does the setting allow?
It lets the wheel scroll a window under the pointer even when that window is not the active one.
Where can I change it?
Find Mouse in Windows Settings and inspect Scroll inactive windows when hovering over them. Choose the behaviour you prefer.
Does scrolling also move keyboard focus?
Do not assume so. Click the intended window before typing, especially when several documents are visible.
What is a simple comparison?
Put two scrollable windows side by side, click one and hover over the other. Compare wheel movement with the setting on and off.
Is every application identical?
No. Application handling can differ. Repeat the test with ordinary documents before treating one app as a hardware diagnosis.
When is a new mouse appropriate?
Investigate replacement when unwanted wheel movement remains across suitable tests. Changing this Windows preference costs R0.
Find a mouse that fits your desk after checking hover scrolling.