JSI Tip 0187 - Where is my last Last Known Good?

The following Value entries of the Select subkey define the meaning of a ControlSet: (all are type REG_DWORD and have a range of 0xN where N is a ControlSet)

HKEY_LOCAL_MACHINE\System\Select


Current
    
Identifies a control set set from which the CurrentControlSet subkey is derived.
If this value is 0x1, the subkey producing the CurrentControlSet is ControlSet001.

Default
    
The default control set. If this value is 0x1, the default control set is ControlSet001.

Failed
    
The control set that was last rejected and replaced with a LastKnownGood control set.

LastKnownGood     
The last control set that successfully started the system.


HOWEVER

If ReportBootOk    (type REG_SZ) at:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

is set to 0, a LastKnownGood ControlSet will not be created. A string value of 1 is the normal setting.

To prevent LastKnownGood selection at a Kiosk, set the LastKnownGood to 0 and set ReportBootOk to 0.



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