REGEDIT4

[HKEY_CLASSES_ROOT\CLSID\{73FDDC80-AEA9-101A-98A7-00AA00374959}\DataFormats]

[HKEY_CLASSES_ROOT\CLSID\{73FDDC80-AEA9-101A-98A7-00AA00374959}\DataFormats\PriorityCacheFormats]
"Rich Text Format"=""