Reg Add Hkcu Software Classes Clsid 86ca1aa0-34aa-4e8b-a509 Jun 2026

reg add "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32" /f /ve HKCU (HKEY_CURRENT_USER)

reg add HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509 /ve /d "My COM Object" /f

The last line registers the CLSID as a context menu handler for all files ( * ). When the user right-clicks a file, Explorer looks up that CLSID, loads the DLL, and executes its code. Reg Add Hkcu Software Classes Clsid 86ca1aa0-34aa-4e8b-a509

This registry entry overrides the COM components responsible for the new Windows 11 menu. By providing an empty value for the InprocServer32 key, Windows fails to load the new menu and falls back to the legacy Windows 10 version. Additional Resources

That command is the classic way to in Windows 11. By providing an empty value for the InprocServer32

This write-up is for educational and defensive security purposes only. Unauthorized modification of the registry can break applications or compromise system security.

reg add HKCU\Software\Classes\CLSID\86CA1AA0-34AA-4E8B-A509 Explorer looks up that CLSID

A CLSID (Class ID) is a globally unique identifier (GUID) that identifies a COM component. COM components are reusable software modules that provide a set of interfaces that can be used by other applications to interact with the component. CLSIDs are used to identify and locate these components on a system.