Hi

I have a Windows 8.1 (with updates) System which was upgraded from Windows 8.0 using a Clean Install. Recently Hyper-V has stopped running on my system.

The Event log shows an error:

'CentOS65' failed to start worker process: Server execution failed (0x80080005). (Virtual machine ID 9EF5529D-3755-40B3-AC6A-325A564D19BB)
-     System
-     Provider
            [ Name]     Microsoft-Windows-Hyper-V-VMMS
            [ Guid]     {6066F867-7CA1-4418-85FD-36E3F9C0600C}
    EventID     15500
    Version     0
    Level     2
    Task     0
    Opcode     0
    Keywords     0x8000000000000000
        
-     TimeCreated
            [ SystemTime]     2014-07-17T07:57:28.568965100Z
    EventRecordID     302
    Correlation
-     Execution
            [ ProcessID]     4040
            [ ThreadID]     1396
    Channel     Microsoft-Windows-Hyper-V-VMMS-Admin
    Computer     viveksasmung
-     Security
            [ UserID]     S-1-5-18
-     UserData
-     VmlEventLog
    VmName     CentOS65
    VmId     9EF5529D-3755-40B3-AC6A-325A564D19BB
    ErrorMessage     %%2148007941
    ErrorCode     0x80080005

The WMI-Activity log shows the error:

Id = {00000000-0000-0000-0000-000000000000}; ClientMachine = VIVEKSASMUNG; User = viveksasmung\Vivek; ClientProcessId = 9756; Component = Core; Operation = Start IWbemServices::ExecNotificationQuery - root\virtualization\v2 : select * from __InstanceDeletionEvent within 2 where TargetInstance ISA 'Msvm_ComputerSystem' ; ResultCode = 0xC7F0FCD0; PossibleCause = Could not send status to client

The Hyper-V-VMMS Admin Log shows the error:

The worker process for virtual machine 'CentOS65' failed to respond within the startup timeout period and was restarted. (Virtual machine ID 9EF5529D-3755-40B3-AC6A-325A564D19BB)

'CentOS65' failed to start. (Virtual machine ID 9EF5529D-3755-40B3-AC6A-325A564D19BB)

The Hyper-V Worker Log shows the error:

The Virtual Machine Worker Process has lost its connection to the root\virtualization WMI namespace: General access denied error (0x80070005). As a result, some WMI operations may not function correctly. To correct the problem, try restarting the Windows Management Instrumentation service.

I set the Hyper-V Tracing to ON using vmconnect.config file and the error log is as follows:

Tracing Hyper-V Client version: 6.3.0.0. Rough build date (virtman file written): 05/18/2014 23:25:02

2014-07-17 01:55:28.990 [08] USER_ACTION_INITIATED VMBrowser ServerNode:ConnectToServer() Connecting to server localhost...
2014-07-17 01:55:29.008 [08] USER_ACTION_COMPLETED VMBrowser ServerNode:ConnectToServer() Successfully connected to server.
2014-07-17 01:55:29.463 [07] WARNING VirtMan WmiAssociation:GetRelatedObjects() The WMI object 'Msvm_RdvComponentSettingData' + could not be mapped to VirtMan type so ignore it.
2014-07-17 01:55:33.001 [03] USER_ACTION_INITIATED VMBrowser ServerNodeViewControl:OnStartVm() Starting VM(s)...
2014-07-17 01:55:33.023 [09] USER_ACTION_INITIATED VMBrowser VMActionBatchPerformer:Perform() Changing virtual machine '9EF5529D-3755-40B3-AC6A-325A564D19BB' ('CentOS65') state from 'PowerOff' to 'Running'
2014-07-17 01:59:33.927 [12] ERROR VirtMan ThrowHelper:ThrowVirtualizationOperationFailedException() Operation 'SetState' failed with message ''CentOS65' failed to start.'.
    Error code '32768'.
    Detailed message ''CentOS65' failed to start. (Virtual machine ID 9EF5529D-3755-40B3-AC6A-325A564D19BB)

'CentOS65' failed to start worker process: Server execution failed (0x80080005). (Virtual machine ID 9EF5529D-3755-40B3-AC6A-325A564D19BB)'.
2014-07-17 01:59:33.930 [12] ERROR VMBrowser VMActionBatchPerformer:OnTaskCompleted() Tracked task operation failed!
    'CentOS65' failed to start.
       at Microsoft.Virtualization.Client.Management.ThrowHelper.ThrowVirtualizationOperationFailedException(String errorMsg, String errorDescriptionMsg, VirtualizationOperation operation, Int64 errorCode, Boolean operationCanceled, ErrorCodeMapper mapper, Exception innerException)
   at Microsoft.Virtualization.Client.Management.View.EndMethodReturnInternal(IVMTask task, VirtualizationOperation operation, Boolean affectedElementExpected)
   at Microsoft.Virtualization.Client.Management.VMComputerSystemBaseView.EndSetState(IVMTask setStateTask)
   at Microsoft.Virtualization.Client.VMBrowser.ChangeVMStatePerformer.EndTrackedTask(IVMTask task)
   at Microsoft.Virtualization.Client.VMBrowser.VMActionBatchPerformer.OnTaskCompleted(Object sender, EventArgs e)
2014-07-17 01:59:46.103 [03] USER_ACTION_INITIATED VMBrowser ServerNode:DisconnectFromServer() Disconnecting from server localhost...
2014-07-17 01:59:46.104 [03] USER_ACTION_COMPLETED VMBrowser ServerNode:DisconnectFromServer() Server had been disconnected successfully.

Upon using BCDEdit, output is below

Windows Boot Manager
--------------------
identifier              {bootmgr}
device                  partition=\Device\HarddiskVolume1
path                    \bootmgr
description             Windows Boot Manager
locale                  en-GB
default                 {current}
resumeobject            {37225af7-cc62-11e3-8277-806e6f6e6963}
displayorder            {current}
                        {3ce506e4-cc90-11e3-8b9f-8a809d5a6432}
timeout                 30

Windows Boot Loader
-------------------
identifier              {current}
device                  partition=C:
path                    \Windows\system32\winload.exe
description             Windows 8.1 Pro with Media Center
locale                  en-GB
recoverysequence        {3ce506df-cc90-11e3-8b9f-8a809d5a6432}
recoveryenabled         Yes
osdevice                partition=C:
systemroot              \Windows
resumeobject            {37225af7-cc62-11e3-8277-806e6f6e6963}
bootmenupolicy          Legacy
hypervisorlaunchtype    Auto
quietboot               No

Real-mode Boot Sector
---------------------
identifier              {3ce506e4-cc90-11e3-8b9f-8a809d5a6432}
device                  partition=C:
path                    \Hd0Par3.pbr
description             Ubuntu LTS 14.04

I have set permissions to the VHD folder using the command below

icacls "c:\CentOS65\CentOS65" /grant "CREATOR OWNER":(OI)(CI)(IO)F
icacls "c:\CentOS65\CentOS65" /grant "NT AUTHORITY\SYSTEM":(OI)(CI)F
icacls "c:\CentOS65\CentOS65" /grant "NT VIRTUAL MACHINE\Virtual Machines":(RC,S,GR,RD,WD,AD,REA,RA)
icacls "c:\CentOS65\CentOS65" /grant "NT VIRTUAL MACHINE\Virtual Machines":(CI)(IO)(GR,WD,AD)
icacls "c:\CentOS65\CentOS65\Virtual Hard Disks" /grant "NT VIRTUAL MACHINE\Virtual Machines":(RC,S,GR,RD,WD,AD,REA,RA)
icacls "c:\CentOS65\CentOS65\Virtual Hard Disks" /grant "NT VIRTUAL MACHINE\Virtual Machines":(CI)(IO)(GR,WD,AD)

icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOSHome.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOS65.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOSHome_9E7FEF2E-85E0-4278-AABD-01D5E45EE643.avhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOS65_28FF0E50-0FBA-4754-A4CC-B3DAEC7E3DAA.avhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOSHome.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOS65.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(RC,S,GR,GW,RD,WD,AD,REA,WEA,RA,WA)

icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOS65.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(F)
icacls "C:\CentOS65\CentOS65\Virtual Hard Disks\CentOSHome.vhdx" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(F)
icacls "C:\CentOS65\CentOS65\Virtual Machines\9EF5529D-3755-40B3-AC6A-325A564D19BB.xml" /grant "NT VIRTUAL MACHINE\9EF5529D-3755-40B3-AC6A-325A564D19BB":(F)

I am unable to create new VMs as well.

I have already run

1. sfc/ scannow
2. DISM

Already Tried disabling the antivirus

Upon using wbemtest and connecting to root\virtualization, I am able to click Enum Classes > Recursive

Kindly suggest how to get HyperV working please. Any help (short of reinstalling /resetting windows) would be much appreciated.

Warm Regards,

Dr Vivek Gupta

Hi,

The key point would be this:

The Virtual Machine Worker Process has lost its connection to the root\virtualization WMI namespace: General access denied error (0x80070005).

Please open MMC, add Component Services snap-in:

Component Services -> Computers -> My Computer -> DCOM Config -> Windows Management Instrumentation -> Right Click, Properties -> Security Launch and Activation Permission -> Edit -> gave Authenticated Users  Full Control

Check the result.

Hi,

You mentioned you are unable to create new Virtual Machine? What's the error you are thrown with?

Sidetrack, I don't suppose recommend you to store the VHD or VMs file directly on the C root path. The default for Hyper-V should be under C:\users\public\~

Did you change it somehow? 

Anyone have a solution to this? I am having the same problem but on Windows 2008 R2 SP1. Just started yesterday and have an open incident with Microsoft, but not even they can help.

Andrea

Hi Andrea,

Do you have the same error information? If so, have you tried my suggestion?

If not, I suggest you start a new thread in Windows Server forum for help.

Hi Alex,

I am also facing the same issue (when I am trying to start Hyper-V machine, I used this VM earliest so many times in the same laptop) in my Windows 8.1 system.

Error : "XXXXX failed to start worker process server execution failed 0x80080005"

Any solution for this.

I deleted the saved status and tried to start, but no use.

I tried the above steps mentioned by you, but no use.

Could you please help me on this.

--
Regards,
Ajay