ERROR_VID_MBP_ALREADY_LOCKED_USING_RESERVED_PAGE

Cannot lock or map the memory block page for the virtualization infrastructure driver because it has already been locked using a reserve page set page. Restarting the virtual machine may fix the problem. If the problem persists, try restarting the physical computer.

Matched as: the code as given (hex)

HRESULT breakdown: code: 37, customer: False, facility: 55, severity: failure (bit 31 set), ntstatus_wrapped: False

Source: COM Error Codes (FWP, WS, NDIS, HyperV) (Winerror.h) · CC BY 4.0 · wording unchanged, formatting adapted for this site · retrieved 2026-10-24