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The admin station and the server need to be in the same domain. 
Make sure you admin station is allowing incoming and outgoing connections to and from the server. 
Also, use some of the following commands on Server Core to enable remote management. 
 
Enable remote management from any MMC snap-in - 
netsh advfirewall firewall set rule group=&quot;Remote Administration&quot; new enable=yes 
 
Use Windows Firewall snap-in from Vista or Server 2008 machine to remotely manage the Server Core firewall - 
netsh advfirewall set currentprofile settings remotemanagement enable 
 
Enable Remote Desktop for Administration - 
cscript c:\windows\system32\scregedit.wsf /AR /v 0 
<a href="http://itprostuff.blogspot.com/2008/07/server-2008-core-configuration.html" rel="ugc">http://itprostuff.blogspot.com/2008/07/server-2008-core-configuration.html</a> 
<a href="http://technet.microsoft.com/en-us/library/cc753802.aspx" rel="ugc">http://technet.microsoft.com/en-us/library/cc753802.aspx</a> 

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The admin station and the server need to be in the same domain.
Make sure you admin station is allowing incoming and outgoing connections to and from the server.
Also, use some of the following commands on Server Core to enable remote management.

Enable remote management from any MMC snap-in -
netsh advfirewall firewall set rule group="Remote Administration" new enable=yes

Use Windows Firewall snap-in from Vista or Server 2008 machine to remotely manage the Server Core firewall -
netsh advfirewall set currentprofile settings remotemanagement enable

Enable Remote Desktop for Administration -
cscript c:\windows\system32\scregedit.wsf /AR /v 0
http://itprostuff.blogspot.com/2008/07/server-2008-core-configuration.html [http://itprostuff.blogspot.com/2008/07/server-2008-core-configuration.html]
http://technet.microsoft.com/en-us/library/cc753802.aspx [http://technet.microsoft.com/en-us/library/cc753802.aspx]


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I have installed the Hyper-V role on a server 2008 core edition. I then added the management tools to a separate server 2008. When I try to connect to the server it fails. Any ideas? The firewall on the core server is disabled and still no luck. It says the operation on the computer failed.
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I have installed the Hyper-V role on a server 2008 core edition. I then added the management tools to a separate server 2008. When I try to connect to the server it fails. Any ideas? The firewall on the core server is disabled and still no luck. It says the operation on the computer failed.

Remote Management Hyper-V

Microsoft Virtual Server was a virtualization solution that facilitated the creation of virtual machines on the Windows XP, Windows Vista and Windows Server 2003 operating systems. Virtual machines are created and managed through a web-based interface that relies on Internet Information Services (IIS) or through a Windows client application tool called VMRCplus. Features included Linux guest operating system support, Virtual Disk Precompactor, symmetric multiprocessing (SMP), x64 host operating system support, the ability to mount virtual hard drives on the host machine and additional operating systems support, including Windows Vista, and a volume shadow copy writer.