(sorry for my english)
Hi,
I had (I hope this problem never come back) "norton protect" greyed out problem/bug (like many people).
After spending hours searching / trying things / uninstalling / reinstalling Norton Security I found that some software for monitoring temp/fans/hardware put auto protect in grey status (with * and a message like "these setting cannot be changed due to a pending ..... . Please restart your computer to resolve this issue"). But restart (also many reboots), unfortunatley, won't resolve nothing....
In my case was GPU-Z. I just put the software files on scan and sonar exclusion, et voilà....no more "auto protect" greyed out.
Hoping that could be usefull to someones
Alan