Since latest patch 22.7.0.76 Norton Security protection updates are not registering as current but still the previous day for most of the day when Symantec's webpage says current ones (today) are available. It is taking early to late in the evening before there are new definitions registering protection updates as current . At time of posting this in the UK it is 21:50 and site says definitions for traditional antivirus for 7/1/2016 are available but my Norton is still saying updates for 6/30/2016 and reports when using Liveupdate that ii is fully updated.
Diagnostics report no problems so if it's a server issue SORT IT OUT SYMANTEC !