Registry: HKEY_CLASSES_ROOT\CLSID\CLSID

The default value of the HKEY_CLASSES_ROOT\CLSID\CLSID key is {0000031A-0000-0000-C000-000000000046}. This GUID identifies the Prog ID for the class moniker (that is: the default value of HKEY_CLASSES_ROOT\CLSID\{0000031A-0000-0000-C000-000000000046}\ProgId is clsid and thus points back to HKEY_CLASSES_ROOT\CLSID).

The GUID is also found under HKEY_CLASSES_ROOT\CLSID\{0000031A-0000-0000-C000-000000000046}