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Windows Update Automatic Updates client switches

wuauclt utility switches:

/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.

/DetectNow
/DemoUI
/IdleShutdownNow
/ShowOptions
/ShowWUAutoScan
/UpdateNow
/SelfUpdateUnmanaged
/SelfUpdateManaged
/CloseWindowsUpdate
/ShowWindowsUpdate
/ShowWU
/ResetEulas
/ResetAuthorization
/ShowSettingsDialog
/RunHandlerComServer
/ReportNow
/DetectNow

source : http://technet.microsoft.com/en-us/library/cc720477%28WS.10%29.aspx