reg delete "HKCU\Software\Classes\CLSID\86CA1AA0-34AA-4E8B-A509-50C905BAE2A2" /f
The command appears to be an attempt to register a (identified by 86ca1aa0-34aa-4e8b-a509-50c905bae2a2 ) under HKCU\Software\Classes\CLSID by setting its InprocServer32 subkey to point to a DLL or executable.
Note: run these commands from an elevated command prompt only if needed; HKCU edits do not require elevation for the current user.
It seems you're asking for an article explaining the reg add command for a specific CLSID under HKCU\Software\Classes\CLSID , along with the ve and d and f parameters (likely a typo for /ve , /d , /f ).