Windows 10: Hyper-V Manager won't connect to local computer (error message)

  1. Posts : 238
    Server 2012 R2 and Windows 10 x64 v1709
       11 Apr 2015 #1

    Hyper-V Manager won't connect to local computer (error message)

    System specs are below. Virtualization is turned on in BIOS. Hyper-V is installed.

    When I start Hyper-V Manager it's not connected to a server. I click Connect to Server->Local Computer and get the error message (see below).

    I can see none of the Hyper-V services are running. If I try starting Hyper-V VM Session Service manually, I get the error shown below.

    Any ideas how to get Hyper-V up and running? Thanks in advance for any ideas/help.
    OS Name    Microsoft        Windows 10 Pro Technical Preview    
    Version                10.0.10041Build 10041        
    OSManufacturer            Microsoft Corporation    
    SystemManufacturer        Dell Inc.    
    SystemModel            OptiPlex 360    
    SystemType            x64-based PC            
    Processor            Intel(R)Core(TM)2 Duo CPU     E7600  @ 3.06GHz, 3059 Mhz, 2 Core(s), 2Logical Processor(s)    
    BIOSVersion/Date        Dell Inc. A06, 8/4/2011    
    SMBIOSVersion            2.5    
    BIOS Mode            Legacy    
    BaseBoardManufacturer        Dell Inc.    
    BaseBoardModel            Not Available    
    Platform Role            SOHOServer    
    Secure BootState        Unsupported    
    PCR7Configuration        Binding Not Possible    
    Hardware AbstractionLayer    Version = "10.0.10041.0"    
    Installed PhysicalMemory (RAM)    4.00 GB    
    Total PhysicalMemory        3.93 GB    
    Available PhysicalMemory    2.65 GB    
    Total VirtualMemory        5.31 GB    
    Available VirtualMemory    3.84 GB    
    Page FileSpace            1.38 GB    
    Hyper-V - VM MonitorMode Extensions            Yes    
    Hyper-V - SecondLevel Address Translation Extensions    No    
    Hyper-V -Virtualization Enabled in Firmware        Yes    
    Hyper-V - DataExecution Protection            Yes
    Attached Thumbnails Attached Thumbnails HyperVerror.jpg   Service Error.jpg  
      My ComputerSystem Spec

  2.    12 Apr 2015 #2

    You have a Core 2 Duo E7300 processor. Unfortually, this processor does not support Second Level Address Translation or Intel Virtualization Technology, so you can't run Client Hyper-V (ie Window 8 or Windows 10 Hyper-V).

    While your BIOS supports turning on Virtualization, your Processor does not.
      My ComputerSystem Spec

  3. Posts : 238
    Server 2012 R2 and Windows 10 x64 v1709
    Thread Starter
       12 Apr 2015 #3

    You misread the CPU model. It's an Intel Core 2 E7600 processor. It does support Intel Virtualization.

    /* EDIT */
    Ahhh, but on further reading, and as you mention, Hyper-V SLAT (Second Level Address Translations Extensions) is also required (though not often mentioned).

    So, I'd call this a bug. Windows 8 returns an installation error message if SLAT isn't supported. Win 10 Preview does not.
    Attached Thumbnails Attached Thumbnails SLAT.jpg  
    Last edited by ComputerGeek; 12 Apr 2015 at 10:39.
      My ComputerSystem Spec

  4.    12 Apr 2015 #4

    Sorry, yeah, I misread that number. But, as you have found out, it still won't work because of a lack of SLAT. Strangely, SLAT is only required in the Desktop OS version, not in the Server version.

    It may be that MS intended to remove SLAT restrictions for Windows 10, but it hasn't yet (or just didn't) make it into the build. Or it may be, as you say, a bug in detecting SLAT for Desktops.
      My ComputerSystem Spec


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