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Event ID 40 — Hypervisor Availability

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Applies To: Windows Server 2008

This is preliminary documentation and subject to change.

Hypervisor availability

Event Details

Product: Windows Operating System
ID: 40
Source: Microsoft-Windows-Hyper-V-Hypervisor
Version: 6.0
Symbolic Name: HV_EVENTLOG_BAL_HYPERVISOR_VERSION_MISMATCH
Message: Hyper-V launch failed; the Hyper-V image at %1%2 is revision %3, but the currently installed virtualization software only supports launching revision %4 Hyper-V images.

Resolve

Reinstall Hyper-V

A possible security compromise has been created. Completely reimage the server (sometimes called a bare metal restoration), install a new operating system, and enable the Hyper-V role.

The hypervisor image is unavailable, corrupted, or an incompatible version. Reinstall the Hyper-V role.

Verify

Hypervisor successfully starts.

Hypervisor Availability

Hyper-V