System Center Virtual Machine Manager 2008 R2 Adding Host error-message 406

Hi everyone,

I was just installing VMM 2008 R2 on our backup server, but got into little problems.. First it was that the cluster's IP-address was not in the DNS which I added..

After wanting to add a physical host to the VMM 2008 I got a pop-up that I needed to add the cluster, because the host was part of it. Adding the cluster was succesfull for some part, because the physical hosts are not added yet, they are still in a pending state.

Error:
Error (406)
Access has been denied while contacting the server HYPERV01.management.local.  

Recommended Action
1. Verify that the specified user account has administrative privileges on HYPERV01.management.local.
2. Verify that DCOM access, launch, and activation permissions are enabled on HYPERV01.management.local for the Administrators group. Use dcomcnfg.exe to modify permissions, and then try the operation again.

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I have browsed the forums and have already checked DCOM permissions on the 2 physical hosts. I am trying to access this server with the domain administrator account (which is added to the local administrators group on both of the hyper-v server). The DCOM permissions are set to full control for the local administators group so don't know what would be the cause of this.

Also tried disabling the firewall, but doesn't work.

NB: The server where I installed VMM 2008 R2 on is an additional domaincontroller for the management.local domains where my cluster is located.

I hope some of you can help me to get this issue resolved.
Error-406.png
Silencer001Asked:
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Silencer001Author Commented:
Thanks for the reply! Rebooting the servers after the DCOM permissions was neccessary. After that they added succesfully but came up with another error that the VM's could not get refreshed.

The second workarround for the problem worked for me (http://qa.social.technet.microsoft.com/Forums/da-DK/virtualmachinemgrclustering/thread/f1dc16c9-b3d4-4d59-b804-359fad8f23ac)
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