| Previous | Next |
| STATUS_HV_PROCESSOR_STARTUP_TIMEOUT | STATUS_HV_INVALID_LP_INDEX |
STATUS_HV_SMX_ENABLED
Intel SMX/TXT state is blocking the Hyper-V path
STATUS_HV_SMX_ENABLED reports that Safer Mode Extensions are enabled in firmware or platform state. SMX is associated with Intel Trusted Execution Technology and measured launch. Some Hyper-V paths require a platform state that does not have SMX enabled in the way the hypervisor has detected.
This is a platform configuration issue, not a malformed VM handle. The useful evidence is firmware security configuration and how the machine was launched, especially on systems with TXT, measured boot, secure launch, or security products that configure virtualization features early in boot.
What to inspect
- BIOS or UEFI settings for Intel TXT, SMX, measured launch, and virtualization security features.
- Whether the failure started after firmware updates or enabling security baselines.
- Host boot configuration and any secure-launch or VBS-related settings.
- Whether the same VM starts on a host with different firmware security settings.
Useful distinction
Do not confuse this with STATUS_HV_NX_NOT_DETECTED. Both are platform capability/configuration statuses, but NX is about execute-disable support, while this status is specifically about SMX/TXT state.
References
- Microsoft: Hyper-V architecture
- Microsoft: Hyper-V TLFS
- Linux kernel documentation: Hyper-V overview
- ReactOS: ntstatus.h constant definitions
Looking for a different code? Search another status or error code.