3 high priority HKEYerrors not fixed, why???

Norton utilities is identifying 3 high priority registry errors but not fixing them in windows 8, why??? Theay are also not on an ignore list that I can find.

 

3 errors not  fixed:

HKEY_CLASSES_ROOT\CLSID\{31337EC7-5767-11CF-BEAB-00AA006C3606}\LocalServer32

HKEY_CLASSES_ROOT\CLSID\{5DE7918B-BFD7-4C1E-B4E0-B16D0A3EA76B}\InProcServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Device Association Framework\InboxProviders\WCN

 

I have scanned my system numerous times and these errors are being ignored when I tell NU to fix them. Why  are these not being repaired and how do I get them repaired?

 

Thanks in advance,

 

J. Hill