https://technet.microsoft.com/en-us/library/cc720477%28v=ws.10%29.aspx?f=255&MSPPError=-2147217396
The wuauclt Utility
/a /ResetAuthorization
Initiates an asynchronous background search for applicable updates. If Automatic Updates is disabled, this option has no effect.
/r /ReportNow
Sends all queued reporting events to the server asynchronously.
/? /h /help
Shows this help information.