How to Change Mouse Scroll Speed in Regedit

This guide explains how to configure your mouse wheel’s vertical scrolling line count by modifying the Windows Registry. Adjusting this value directly through Regedit allows you to set precise scroll increments beyond the standard limits available in the default Windows Settings interface.

Step 1: Open the Registry Editor

  1. Press Windows Key + R on your keyboard to open the Run dialog box.
  2. Type regedit into the field and press Enter or click OK.
  3. Click Yes if prompted by User Account Control (UAC).

Step 2: Navigate to the Mouse Desktop Settings

In the Registry Editor, use the left sidebar to navigate to the following path, or copy and paste it into the address bar at the top:

HKEY_CURRENT_USER\Control Panel\Desktop

Step 3: Modify the WheelScrollLines Value

  1. With the Desktop key selected in the left pane, scroll down the list on the right side to find the string value named WheelScrollLines.
  2. Double-click WheelScrollLines to open the Edit String window.
  3. In the Value data field, enter the number of lines you want the screen to scroll for every single notch of the mouse wheel.
    • The default value is 3.
    • Entering a higher number (e.g., 6 or 10) increases scrolling speed.
    • Setting the value to 0 disables scrolling entirely.
  4. Click OK to save the changes.

Step 4: Apply the Changes

Registry changes to this parameter do not take effect immediately in running applications. To apply the new scroll speed:

  1. Sign out of your Windows user account and sign back in, or restart your computer.
  2. Once signed back in, your mouse wheel will scroll according to the specified line count.