It seems like your mouse's middle button is not functioning correctly on the taskbar in Windows 11. Since it works elsewhere and on other computers, the issue might be specific to your system's configuration. Try the following steps: Check for Updates: Ensure that Windows and your mouse drivers are fully updated. Mouse Settings: Go to 'Settings' > 'Devices' > 'Mouse' and ensure the middle button is configured correctly. Disable Third-Party Software: If you have any third-party mouse or customization software, try disabling it to see if it resolves the issue. Test in Safe Mode: Boot into Safe Mode to see if the issue persists, which can help identify if another software is causing the problem. If the problem continues, consider trying a different mouse or contacting the manufacturer's support for further assistance.