Disable new context menu:
reg.exe add "HKCU\Software\Classes\CLSID{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}\InprocServer32" /f /ve
Restore new context menu:
reg.exe delete "HKCU\Software\Classes\CLSID{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}" /f
...
https://www.youtube.com/watch?v=ZKMPWOWlRU4