I'm having the same problem. I've tried the offline installer, and it works for a day or so, and then both Web and mail protocol and Anti-Phishing break, turn themselves off, and there is no way to fix it without a complete uninstall. This seems to be an ongoing issue given the various complaints around the interwebs.
I'm running Windows 10 on the Fast Ring. I've uinstalled/reinstalled 3 times now and I get the same results each time. NOD32 works for a day or so and then those two features turn themselves off/break without my input.