If you want to bring back the new Windows 11 context menu, use the reg delete command:
It looks like you're referencing a involving reg add , a CLSID, and InprocServer32 . This appears to be a potential security artifact — possibly from malware, a COM object registration, or a persistence mechanism.
reg add "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32" /ve /d "C:\malware.dll" /f