With this tips you can disable the right click on the taskbar.
- Start regedit
- Navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
- Modify/Create DWORD Value of Data type REG_DWORD Named “NoTrayContextMenu”
- Setting for Value Data: 0 or 1 (0 = Enabled / 1 = Disabled)
- Close regedit
- Reboot