// wdm.h
NTSTATUS KdEnableDebugger();
View the official Windows Driver Kit DDI referenceNo description available.
The KdEnableDebugger routine re-enables the kernel debugger after a call to the KdDisableDebugger routine disables the kernel debugger.
KdEnableDebugger returns STATUS_SUCCESS if the kernel debugger was successfully re-enabled. Otherwise, the return value can be one of the following error status codes:
STATUS_ACCESS_DENIED
STATUS_DEBUGGER_INACTIVE
If the operating system was booted with no debug controls, KdEnableDebugger returns STATUS_DEBUGGER_INACTIVE.
If the kernel debugger is blocked (that is, the KdBlockEnable system variable is set to a value other than FALSE), KdEnableDebugger returns STATUS_ACCESS_DENIED.