Category Archives: Virtualization

Everything related to Virtualization technologies, VMware, HyperV, KVM

You receive an error 408 when you try to install VMMAgent on HyperV host machine that you would like to add to SCVMM 2012 for management.

You receive an error 408 when you try to install VMMAgent on HyperV host machine that you would like to add to SCVMM for management.

Error (408)

lynchyperv.lab.com has an unsupported version of the Virtual Machine Manager agent installed.

Recommended Action

Uninstall the Virtual Machine Manager agent using Add or Remove Programs on lynchyperv.lab.com, and then try the operation again.

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Resolution:

First uninstall any agent on the HyperV host machine.

Then on the SCVMM Server, navigate to the following path

C:\Program Files\Microsoft System Center 2012 R2\Virtual Machine Manager\agents\amd64

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Copy the folder 3.2.7895.0 to the Host machine that you want to add it to the VMM server and run to install the agent and try again to add the agent.

As in the below snapshot .. this will work for you

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Done

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Adding host on VMM causes warning Multipath I/O not enabled for known storage arrays on host x.x.x.x

Installing host agent and configure it on VMM error

When you try to add a new host to the VMM , you get the following warning:

Warning (26179)

Multipath I/O not enabled for known storage arrays on host x.x.x.x

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Resolution:

In order to resolve this problem, you will have to install two features on the host machine.

To do so, run Windows Powershell as admin

Run the following Cmdlets then

Import-Module ServerManager

Add-WindowsFeature Multipath-IO

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Once the command is finished it’s recommended to restart the server.

THE APPLICATION ENCOUNTERED AN ERROR WHILE ATTEMPTING TO CHANGE THE STATE OF “VM”

Symptoms: After you finished deploying your Hyper-V server but in this case without the Server connected to the Internet and time is configured properly.

After you have created and configured new VMs and installed them, when you connect your physical Hyper-V host server to the Internet you notice the time changed and your VMs become inaccessible for certificate issue..

here’s the error and how to fix it.

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3- EXCHANGE_OI on HASIMI NODE2 –

Action

Media Clipboard View Help

Virtual Machine Connection

The application encountered an error while attempting

to change the state of •g- EXCHANGE 01

•3- EXCHANGE_OI’ could not initialize.

Could not initiallze machine remoting system. Error. •Element not

found.’ (000070490).

not find a usable cetificate. Element not found.’

(0000704″).

•3- EXCHANGE_OI’ could not initialize. (Virtual machine 10

B967FUc-20A2-43BD.83EE.99R321DCD55)

•3- EXCHANGE_OI’ could not initialize machine remoting system. Error:

‘Element not found.'(Ox8D070490). (Virtual machine ID

g967FUc.20A2-43gD.B3EE.g9A2321DCD55)

•3- EXCHANGE_OI’ could not find a usable certificate. Error: ‘Element not

Status: Off

found.’ (oxeoc70490). machine

B967FUc-20A2-a3BD-B3EE-99A2321DCD55)

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Symptoms

If the Hyper-V Host Server doesn’t have internet and you have configured it after creating a VM then the server date will change and the self-signed certificate date will change as it won’t be verified by Hyper V manager and will cause launching the VM to fail to start.

Solution:

Delete old certificate and Create a new Self signed certificate.

To do so open MMC

Navigate to Certificates

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In Certificates select Service Account

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Choose local computer and click next

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Then select the Hyper-V Virtual Machine Management Service account and open

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Under the Personal, check the date of the certificate there ..

Delete the certificate

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Open Service Console and restart all Hyper-V Services

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Once the service is restarted, you’ll see a new certificate that has been automatically created

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Now if you try to open the VM console again, it should work.