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Unable to vMotion or power on a 64-bit virtual machine

Symptoms

The 64-bit virtual machine fails before completing the power on operation.
You cannot power on a 64-bit virtual machine in vCenter Server.
You cannot resume a 64-bit virtual machine from a suspended state in vCenter Server.
The 64-bit virtual machine fails to power on
Unable to power on the 64-bit virtual machine
VMotion fails to complete
Unable to complete the vMotion of the 64-bit virtual machine
You messages similar to:

Host CPU is incompatible with the virtual machine's requirements at CPUID level 0x800000001 register "edx".
Host bits 0000:0000:0001:0000:0000:0000:0000:0000
Required: xx1x:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:
Mismatch detected for these features:
* Longmode, required when a virtual machine is configured for a 64-bit guest OS
You see log events in the virtual machine Events tab and vmware-#.log similar to:

[msg.monitorInit.vmm64.initHost.VTDisabled] This CPU is VT-capable, but VT is not enabled (check your BIOS/firmware settings).
vmx| [msg.cpuid.noLongmode] You have configured this virtual machine as a 64-bit guest operating system. However, this host's CPU is not capable of running 64-bit virtual machines or this virtual machine has 64-bit support disabled.
vmx| For more detailed information, see http://www.vmware.com/info?id=152
You see messages similar to:

This CPU is VT-capable, but VT is not enabled

Purpose

This article provides the troubleshooting steps to follow when you encounter vMotion or power on issues for 64-bit virtual machines.

Resolution

Validate that each troubleshooting step below is true for your environment. Each step provides instructions or a link to a document, for validating the step and taking corrective action as necessary. The steps are ordered in the most appropriate sequence to isolate the issue and identify the proper resolution. Please do not skip a step.

To troubleshoot this issue:

Note: This applies to virtual machines with 64-bit operating systems, and not to virtual machines with 32-bit operating systems:

Ensure that your hardware is 64-bit compatible. For more information, see Hardware and Firmware Requirements for 64-bit Guest Operating Systems (1003945).
Check if the physical processors on the source and destination are compatible. For more information, see:
- VMotion CPU Compatibility Requirements for Intel Processors (1991)
- VMotion CPU Compatibility Requirements for AMD Processors (1992)
Make sure that VT support is enabled in the BIOS of the ESX/ESXi host. For more information, see Ensuring Virtualization Technology is enabled on your VMware host (1003944).

Note: If your problem still exists after trying the steps in this article:

Gather the VMware Support Script Data. For more information, see Collecting Diagnostic Information in a VMware Virtual Infrastructure Environment (1003689).
File a support request with VMware Technical Support and note this KB Article ID (1003937) in the problem description. For more information, see How to Submit a Support Request.

Additional Information

For related information, see:

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.

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