title: Windows 10: How do I fix a mouse stuck scrolling horizontally?
body: <p>I had a mouse that was stuck scrolling horizontally.</p>
  <p>It was constantly mimicking the behavior when a user holds down <code>shift</code> and scrolls the mouse wheel.  This made using the start menu, and other native Microsoft Store apps (e.g. GroupMe), very difficult.  It also caused many applications (e.g. Firefox) to change zoom levels when the control key was pressed.</p>
  <p>I tried unplugging the mouse and using <a href="https://support.microsoft.com/en-us/help/14204/windows-7-use-mouse-keys-to-move-mouse-pointer" rel="nofollow noreferrer" title="Mouse Keys">Mouse Keys</a> to move the cursor.  The application under the cursor still horizontally scrolled.  I tried unplugging/replugging my keyboard if the <code>shift</code> key was stuck.  I looked at the Windows On-Screen Keyboard to see if it was registering a <code>shift</code> key as stuck.</p>