A Start-button problem can concern the custom image, the hit area, the Controls mapping, or a competing shell tool. Compare the Windows key with the mouse and return to a supplied button before assuming the application is not running.
What to do
- Press the Windows key and click the visible Start button separately. Write down which action opens which menu.
- Open the Open-Shell settings shortcut and review the Controls tab and Replace Start button option. Keep a known path to the standard Windows menu.
- Switch from a custom bitmap to a supplied button. Retest at the current display scale and on the primary monitor before changing other display settings.
- Temporarily simplify other Start-menu or taskbar customization. Enable one integration at a time and keep a settings export for restoration.
Check the result
Click the center and edges of the intended button area, then test keyboard activation. Repeat after a sign-in and after moving between displays when the issue involves multiple monitors.
Limits & precautions
Open-Shell is not a promise to recreate every Windows 10 taskbar feature on Windows 11. A custom button graphic also does not establish compatibility with another taskbar replacement.
Questions & answers
The Windows key works but the button does not. Is installation broken?
Not necessarily. Investigate the button image, location, and click controls first.
Should I edit the registry to change the click area?
Start with documented button and display settings, and avoid unsupported registry recipes.
Sources & scope
Documentation checked October 30, 2026. These instructions are documentation-led, not a claim of hands-on testing on your Windows build.