To check if the key exists after addition:
Below is a explaining what the command reg add HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509 does, how it works, its legitimate uses, and security considerations. Technical Write-Up: Registering a COM Class ID (CLSID) in HKCU 1. Overview of the Command The command: Reg Add Hkcu Software Classes Clsid 86ca1aa0-34aa-4e8b-a509
reg add HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509 Creates or modifies the registry key for a Component Object Model (COM) class identified by the GUID 86ca1aa0-34aa-4e8b-a509 under the current user's (HKCU) view of Classes\CLSID . To check if the key exists after addition: