Hyper-V launch failed; at least one of the processors in the system does not appear to provide a virtualization platform supported by Hyper-V. Hyper-V launch failed; Either VMX not present or not enabled in BIOS.

Problem

When you install Hyper-V in Microsoft Windows Server 2008, Hyper-V did not start. You got the following error messages in the event logs.

Hyper-V launch failed; Either VMX not present or not enabled in BIOS.

        Log Name:      System
        Source:        Microsoft-Windows-Hyper-V-Hypervisor
        Date:          2/20/2009 3:29:02 PM
        Event ID:      41
        Task Category: None
        Level:         Error
        Keywords:      
        User:          SYSTEM
        Computer:      dbm1113
        Description:
        Hyper-V launch failed; Either VMX not present or not enabled in BIOS.
	

Hyper-V launch failed; at least one of the processors in the system does not appear to provide a virtualization platform supported by Hyper-V.

        Log Name:      System
        Source:        Microsoft-Windows-Hyper-V-Hypervisor
        Date:          2/20/2009 3:29:02 PM
        Event ID:      32
        Task Category: None
        Level:         Error
        Keywords:      
        User:          SYSTEM
        Computer:      dbm1113
        Description:
        Hyper-V launch failed; at least one of the processors in the system 
        does not appear to provide a virtualization platform supported by Hyper-V.
	

Solution

Re-start the server and login to BIOS. Go to Advanced > Advanced Processor Options. Enable "Intel(R) Virtualization Technology" and reboot the server. Now you should get "Hyper-V successfully started.".

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