How to remap mouse buttons when Windows won't
To remap mouse buttons in Windows 11 you get one built-in option: swapping the primary button from left to right. The wheel click and the two side buttons cannot be changed there, and the brand software that can change them only knows its own mice.
Mouse Mapper works with whatever mouse you have plugged in. Pick a button on the drawing in its window, press the key or shortcut it should produce, and save. From then on that button types that key in every program, until you switch mapping off.
All five standard buttons are available: left, right, the wheel button, and Back and Forward on the side. The two thumb buttons are handled separately, so one can be Copy and the other Paste.
Map a mouse button to a key, step by step
Each change happens in one small panel, titled Change a button, with what you press on the left and what Windows receives on the right.
- Click the button you want to change on the mouse drawing. It appears under When I press.
- With Windows gets waiting for input, press the key you want. Hold Ctrl, Shift, Alt or the Windows key at the same time to record a full shortcut.
- If the key is hard to press, such as a media key, use From a list instead.
- Check the keyboard picture under On the keyboard, which highlights where your choice sits.
- Tick Keep the original too if the button should still click as well, then press Save.
Program mouse buttons for games
A game reading DirectInput or Raw Input looks for the hardware code a physical key produces, not the higher-level message most desktop programs use. That is what Mouse Mapper emits when a button fires, with arrow keys, Insert, Home and the like marked as extended just as a real keyboard marks them.
That makes it handy for push-to-talk on a thumb button, a reload or melee key, or a crouch you would rather not hold with your little finger. One limit is worth knowing: titles protected by kernel-level anti-cheat block simulated input from every tool, this one included.
Reassign or silence a mouse button
Sometimes the right job for a button is none. Choose Do nothing in the same panel and that button stops working entirely, which is the quick fix for a middle click that keeps opening tabs.
If a rule ever takes away the click you would need to undo it, press Escape five times and mapping switches off, so every button goes back to normal. Before you save a rule that takes over left click without Keep the original too, the panel warns you. Leave it alone clears the rule from a single button.
