Windows 2012 R2 Hyper-V event id's 20144 and 15130

Question

Windows 2012 R2 Hyper-V.
After installing the May 2014 MS updates we can no longer start any of the guest VM's.  When attempting to start a VM the following is logged in the event logs:
Event id 20144 from Hyper-V-VMMS "Failed to start the virtual machine XYZ' because one of the Hyper-V components is not running"  and
Event id 15130 from Hyper-V-VMMS  "XYZ' failed to start"
We've looked at http://support.microsoft.com/kb/2761004/en-us  and as far as we see the I/O verification option in Driver Verifier is disabled.   We also uninstalled the May
2014 updates that we applied just before the problem started but this did not make a difference.
Help please.

Answer 1

Hi,
I don’t found the similar issue when update, but from the event id, it seems is the incompatible hardware driver, please try to update all your hardware driver and firmware.
 Or you can try the following example command to confirm your Hyper-V service is running or not.
=================================================
C:\Users\Administrator>sc queryex vid
SERVICE_NAME: vid
TYPE              
: 1  KERNEL_DRIVER
STATE             
: 4  RUNNING
(STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
WIN32_EXIT_CODE    : 0  (0x0)
SERVICE_EXIT_CODE  : 0  (0x0)
CHECKPOINT         : 0x0
WAIT_HINT         
: 0x0
PID               
: 0
FLAGS             
C:\Users\Administrator>sc queryex vmbus
SERVICE_NAME: vmbus
TYPE              
: 1  KERNEL_DRIVER
STATE             
: 1  STOPPED
WIN32_EXIT_CODE    : 1077  (0x435)
SERVICE_EXIT_CODE  : 0  (0x0)
CHECKPOINT         : 0x0
WAIT_HINT         
: 0x0
PID               
: 0
C:\Users\Administrator>
===========================================
The related KB:
You cannot start Hyper-V virtual machines after you enable the I/O verification option on a Hyper-V host computer that is running Windows Server 2012 or Windows 8
http://support.microsoft.com/kb/2761004/en-us
The similar thread:
Hyper-V - 'Failed to start the virtual machine 'test' because one of the Hyper-V components is not running.'
http://social.technet.microsoft.com/Forums/windowsserver/en-US/d7e13a44-a9c3-4cb6-b45a-6b347f32b97c/hyperv-failed-to-start-the-virtual-machine-test-because-one-of-the-hyperv-components-is-not?forum=winserverhyperv
Hope this helps.
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