Disable Copilot

Here is the registry settings to disable Copilot

Windows Registry Editor Version 5.00

; Disable Copilot button on taskbar
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"ShowCopilotButton"=dword:00000000

; Disable Copilot service for current user
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\WindowsCopilot]
"TurnOffWindowsCopilot"=dword:00000001

; Disable Copilot service for all users
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsCopilot]
"TurnOffWindowsCopilot"=dword:00000001

or you can download the registry setting here   Disable Copilot