Rob Clerihan
asked on
Hyper V guests will not start after Windows updates this morning!!!
After reboot of Windows 2012 R2 Host this morning (on Dell PE R430), none of the guest VM's will start (both guest vm's are Win 2012 R2 as well). All immediately stop after start attempt with "the application encountered an error while attempting to change the state of server. Server failed to initialize". Event viewer has two errors after start attempt...14070 and 15120. Any help would be greatly appreciated!!! Production environment is down...
Cliff Galiher
Almost vaufsnteed you were tight on disk space and the uodate chewed UP JUST ENOUGH that the VM can't allocate space necessary to start the VM.
ASKER
Checked disk space...quite a bit left on all drives.
Not sure this is the problem, but it reminds me of a time when something got messed up with the permissions on VHDs. HOPEFULLY you don't have any snapshots. Remove the VHDs from each server and at them back. Remove and re-add one at a time. This should reset the permissions and allow the Hyper-V process to access the VHDs (if that's the problem).
Is the disk space in Hyper-V Host not enough ? Or the permission of vhd(x) are modified or haven't modify permission ?
To get up and running uninstall the updates. That is the last thing you have done. This will at least get you up and running.
If you have test environment then you need figure out which update is causing the issue.
If you have test environment then you need figure out which update is causing the issue.
I've found one reference that suggests a file permission can cause this:
1. Back up the C:\ProgramData\Microsoft\V
2. Change security on C:\ProgramData\Microsoft\V
I would also ensure that all the necessary Hyper-V services are running on the host.
1. Back up the C:\ProgramData\Microsoft\V
2. Change security on C:\ProgramData\Microsoft\V
I would also ensure that all the necessary Hyper-V services are running on the host.
I cannot find the HyperVAuthStore.xml nor the Virtual Machine Manager directory... on Hyper-V Server 2019
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