I suspect it's a bug in KB3035129 that came out this evening. For what it's worth, you'll see 9931 if you have updates set to slow, and 9932 if you have updates set to fast. Neither work though.
Gabriel Aul @GabeAul
? 2m 2 minutes ago
@Chris123NT @bdsams The KB we published at 4:00 exposed internal settings. Don't go DDOS the "Check Now" though - still MSFT only to install