In the right hand side, look for a 32-bit DWORD named TaskbarLockAll and change its value data to 1 to disable all the taskbar settings.HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
Method 2: Disable or Lock All Taskbar Settings via Registry Editor If you open the Settings app and navigate to Personalization -> Taskbar, all your taskbar settings are also greyed out. Method 1: Disable or Lock All Taskbar Settings via Group Policy
Here’re 2 simple ways to disable or lock all taskbar settings in Windows 10. After customizing the taskbar in Windows 10, you can lock all the taskbar settings to prevent others from resizing, arranging, moving its location, using small/large taskbar buttons and so on.